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fix: treat failed feature flag records as unevaluated - #1238

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fix/spec211-failed-flags
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fix: treat failed feature flag records as unevaluated#1238
marandaneto wants to merge 7 commits into
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fix/spec211-failed-flags

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@marandaneto

@marandaneto marandaneto commented Nov 12, 2026 •
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💡 Motivation and Context

Detailed /flags records marked failed: true have no evaluated value. Implements the direct failed-record contract in PostHog/sdk-specs#211:

  • Explicit well-formed failed direct records return no result or payload and report evaluation_failed, retaining independent response errors and diagnostic attribution; failed records do not emit experiment exposures.
  • Snapshot getters honor caller defaults for absent values and omit failed values/payloads from keys and capture enrichment while retaining private diagnostics.
  • Bulk fallback preserves successful same-context local value/payload pairs for failed remote keys, without changing successful remote precedence.
  • Healthy false, legacy flat-map interpretation, malformed-record compatibility, last-good-cache behavior and public signatures are preserved.
  • Review follow-up: preserve local unresolved reasons when fallback returns only well-formed failed diagnostics. Healthy false resolves; remote-only failed keys cannot acquire a local reason; existing filters/defaults/enrichment remain unchanged.

The full branch also updates attribution, v4 and frozen-release comparison assertions to the agreed no-result behavior; frozen fixture files, schemas and digests are unchanged. Existing pypi/posthog: patch Sampo intent remains; no duplicate intent or manual version bump.

Explicit scope limit: broader snapshot evaluation_failed versus local_evaluation_inconclusive telemetry remains unchanged and separate. No new snapshot-inclusion policy or full cross-SDK conformance claim.

💚 How did you test it?

Current local result at 0621e4d20f9c782a2ddcc7010cef89993ecb105c, Python 3.13.13 in the existing environment; commands used uv run --frozen --no-sync:

  • Existing remote-success baseline: 1 passed. New local-inconclusive/failed-fallback regression first failed all three absent/false/true response-error-bit cases: expected continuity reason, actual {}. Identical focused command after fix: 3 passed.
  • Snapshot/failed-record neighbor suites: 176 passed.
  • Flags, cache, async, experiment-attribution and released-behavior suites (pytest posthog/test/test_*flag*.py posthog/test/test_experiment_exposure.py --timeout=30): 1,987 passed.
  • Full Ruff lint and format (405 files) passed. Full Mypy plus repository baseline filter passed (341 source files, no issues). Public API snapshot/checker tests, warnings-as-errors import and git diff --check passed.
  • Exact committed branch reviewed by mandatory autoreview against origin/main (7eabca81234311dfd86e516c4354c5322f73bfc5): clean, no accepted/actionable findings. Full branch test Authoring audit/deslop completed; no fixture/schema/discovery changes or relaxed healthy assertions.

No dependencies installed, lockfile edits, generated mirror/package builds, supported-Python/platform matrix, strict downstream Pyright, live service, benchmarks or shared cross-SDK harness runs this round. Full root suite was not rerun; previously reported unrelated macOS metrics-fork failures remain historical evidence, not newly validated results. No current green-CI claim.

External harness follow-up: the unchanged workflow still uses harness 1.28.0, whose prior report expected false for four detailed failed cases where the approved SDK result is null. Harness PR109 has merged, but no release/pin update is authorized here. No pin, adapter behavior, frozen schema or SDK sentinel was changed to hide that mismatch; shared-harness status was not rerun.

📝 Checklist

  • New follow-up commit is signed and locally verified.
  • Full branch diff reviewed; mandatory local autoreview clean.
  • Review regression reproduced before production changes; useful tests retained.
  • Public API signatures/snapshot and frozen fixtures remain unchanged.
  • Existing qualified-package patch changeset retained; no release/pin/version changes.

🤖 Agent context

Autonomy: Human-driven (agent-assisted). Human DRI: @marandaneto. Pi implemented the approved fixes and ran the tests, source/test audit, and isolated autoreview listed above. Human review is required before merge. No shareable session link is available.

@marandaneto marandaneto self-assigned this Nov 12, 2026
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github-actions Bot commented Nov 12, 2026 •
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posthog-python Compliance Report

Date: 2026-11-12T13:46:20.561196+00:00
Duration: 253705ms

⚠️ Some Tests Failed

266/270 tests passed, 4 failed

Capture_V1 Tests

✅ 95/95 tests passed

View Details
Test Status Duration
Endpoint And Method.Targets V1 Endpoint ✅ 514ms
Endpoint And Method.Does Not Use Legacy Endpoints ✅ 509ms
Required Headers.Has Authorization Bearer Header ✅ 509ms
Required Headers.Has Content Type Json ✅ 508ms
Required Headers.Has Posthog Sdk Info Format ✅ 509ms
Required Headers.Has Posthog Attempt Header ✅ 508ms
Required Headers.Has Posthog Request Id ✅ 509ms
Required Headers.Has Posthog Request Timestamp ✅ 509ms
Required Headers.Has User Agent ✅ 509ms
Body Format.Body Has Created At And Batch ✅ 508ms
Body Format.No Api Key In Body ✅ 508ms
Body Format.No Sent At In Body ✅ 509ms
Event Format.Event Has Required Root Fields ✅ 509ms
Event Format.Event Uuid Is Valid ✅ 508ms
Event Format.Event Timestamp Is Rfc3339 ✅ 509ms
Event Format.Non Utc Event Timestamp Is Converted To Utc ✅ 523ms
Event Format.Distinct Id Is String ✅ 509ms
Event Format.Distinct Id At Root Not Properties ✅ 509ms
Event Format.Custom Properties Preserved ✅ 509ms
Event Format.Set Properties Preserved ✅ 508ms
Event Format.Set Once Properties Preserved ✅ 509ms
Event Format.Groups Properties Preserved ✅ 508ms
Event Format.Sdk Generates Uuid If Not Provided ✅ 508ms
Event Format.Event Has Required Root Fields Batch ✅ 512ms
Event Format.Event Uuid Is Valid Batch ✅ 511ms
Event Format.Event Timestamp Is Rfc3339 Batch ✅ 511ms
Event Format.Distinct Id Is String Batch ✅ 511ms
Event Format.Distinct Id At Root Not Properties Batch ✅ 511ms
Event Format.Custom Properties Preserved Batch ✅ 512ms
Event Format.Set Properties Preserved Batch ✅ 510ms
Event Format.Set Once Properties Preserved Batch ✅ 512ms
Event Format.Groups Properties Preserved Batch ✅ 511ms
Event Format.Sdk Generates Uuid If Not Provided Batch ✅ 511ms
Batch Behavior.Multiple Events In Single Batch ✅ 515ms
Batch Behavior.Batch Envelope Smoke ✅ 514ms
Batch Behavior.Flush With No Events Sends Nothing ✅ 506ms
Batch Behavior.Flush At Triggers Batch ✅ 1009ms
Batch Behavior.Created At Reflects Batch Creation Time ✅ 509ms
Deduplication.Generates Unique Uuids ✅ 514ms
Deduplication.Different Events Same Content Different Uuids ✅ 510ms
Deduplication.Preserves Uuid On Retry ✅ 6517ms
Deduplication.Preserves Timestamp On Retry ✅ 6518ms
Deduplication.Preserves Uuid And Timestamp On Batch Retry ✅ 6516ms
Deduplication.No Duplicate Events In Batch ✅ 515ms
Header Behavior On Retry.Attempt Header Starts At One ✅ 509ms
Header Behavior On Retry.Attempt Header Increments On Retry ✅ 13525ms
Header Behavior On Retry.Request Id Preserved On Retry ✅ 6517ms
Header Behavior On Retry.Different Requests Have Different Request Ids ✅ 3018ms
Header Behavior On Retry.Request Timestamp Changes On Retry ✅ 6514ms
Response Format Validation.Success Response Has Uuid Keyed Results ✅ 509ms
Response Format Validation.Success Response Has Ok For Each Event ✅ 513ms
Response Format Validation.Success No Retry After When All Ok ✅ 510ms
Response Format Validation.Success Retry After Present When Retry Events ✅ 1514ms
Response Format Validation.Success No Retry After When Drop Only ✅ 510ms
Response Format Validation.Response Echoes Request Id ✅ 509ms
Retry Behavior.Retries On 408 ✅ 6517ms
Retry Behavior.Retries On 500 ✅ 6514ms
Retry Behavior.Retries On 503 ✅ 8516ms
Retry Behavior.Retries On 504 ✅ 6518ms
Retry Behavior.Retries On 404 ✅ 6519ms
Retry Behavior.Retries On 429 ✅ 6514ms
Retry Behavior.Retries On 502 ✅ 6514ms
Retry Behavior.Retryable Errors Have Retry After ✅ 3515ms
Retry Behavior.Respects Retry After On Retryable Error ✅ 11521ms
Retry Behavior.Does Not Retry On 400 ✅ 2511ms
Retry Behavior.Does Not Retry On 401 ✅ 2512ms
Retry Behavior.Does Not Retry On 402 ✅ 2511ms
Retry Behavior.Does Not Retry On 413 ✅ 2512ms
Retry Behavior.Does Not Retry On 415 ✅ 2512ms
Retry Behavior.Non Retryable Errors Have No Retry After ✅ 2512ms
Retry Behavior.Implements Backoff ✅ 19531ms
Partial Batch Handling.Handles 200 Full Success ✅ 2511ms
Partial Batch Handling.Handles 200 With All Ok ✅ 3516ms
Partial Batch Handling.Does Not Retry Dropped Events ✅ 3514ms
Partial Batch Handling.Does Not Retry Warning Events ✅ 3514ms
Partial Batch Handling.Prunes Ok Events On Partial Retry ✅ 6514ms
Partial Batch Handling.Prunes Dropped Events On Partial Retry ✅ 6515ms
Partial Batch Handling.Retries Only Retry Events From Partial ✅ 6522ms
Partial Batch Handling.Partial Retry Preserves Uuids ✅ 6515ms
Partial Batch Handling.Partial Retry Attempt Header Increments ✅ 6519ms
Partial Batch Handling.Partial Retry Request Id Preserved ✅ 6519ms
Partial Batch Handling.Respects Retry After On Partial ✅ 8520ms
Partial Batch Handling.Unknown Result Treated As Terminal ✅ 3512ms
Partial Batch Handling.Mixed Ok Drop Warning No Retry ✅ 3514ms
Compression.Sends Gzip Content Encoding ✅ 509ms
Compression.No Content Encoding When Disabled ✅ 509ms
Compression.Compressed Body Is Decompressible ✅ 509ms
Error Handling.Does Not Retry On Unknown 4Xx ✅ 2511ms
Event Options.Cookieless Mode Override ✅ 509ms
Event Options.Disable Skew Correction Override ✅ 509ms
Event Options.Process Person Profile Override ✅ 509ms
Event Options.Product Tour Id Override ✅ 508ms
Event Options.Unset Options Omitted ✅ 509ms
Event Options.Options Override In Batch ✅ 511ms
Geoip And Historical Migration.Historical Migration Absent By Default ✅ 509ms

Capture_Ai Tests

✅ 5/5 tests passed

View Details
Test Status Duration
Routing.Capture Ai Posts To Ai Endpoint ✅ 509ms
Routing.Capture Does Not Reroute Ai Named Events ✅ 510ms
Identity.Capture Ai Event Has Uuid ✅ 509ms
Identity.Capture Ai Keeps Supplied Uuid ✅ 508ms
Timestamp Format.Non Utc Event Timestamp Is Converted To Utc ✅ 509ms

Feature_Flags Tests

✅ 17/17 tests passed

View Details
Test Status Duration
Request Payload.Request With Person Properties Device Id ✅ 10ms
Request Payload.Flags Request Uses V4 Query Param ✅ 8ms
Request Payload.Flags Request Hits Flags Path Not Decide ✅ 7ms
Request Payload.Flags Request Omits Authorization Header ✅ 8ms
Request Payload.Token In Flags Body Matches Init ✅ 8ms
Request Payload.Groups Round Trip ✅ 8ms
Request Payload.Groups Default To Empty Object ✅ 9ms
Request Payload.Disable Geoip False Propagates As Geoip Disable False ✅ 8ms
Request Payload.Disable Geoip Omitted Defaults To False ✅ 8ms
Request Payload.Flag Keys To Evaluate Contains Only Requested Key ✅ 8ms
Request Lifecycle.No Flags Request On Init Alone ✅ 3ms
Request Lifecycle.No Flags Request On Normal Capture ✅ 509ms
Request Lifecycle.Two Flag Calls Produce Two Remote Requests ✅ 11ms
Request Lifecycle.Mock Response Value Is Returned To Caller ✅ 7ms
Retry Behavior.Retries Flags On 502 ✅ 311ms
Retry Behavior.Retries Flags On 504 ✅ 312ms
Side Effect Events.Get Feature Flag Captures Feature Flag Called Event ✅ 510ms

Feature_Flags_V4 Tests

⚠️ 145/149 tests passed, 4 failed

View Details
Test Status Duration
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Complete Split] ✅ 9ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Partial Split Missing Config Version] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Partial Split Missing Rule Type] ✅ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Partial Split Missing Rule Id] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Partial Split Missing Variant Key] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Split Wrong Type Config Version] ✅ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Split Wrong Type Rule Type] ✅ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Split Wrong Type Rule Id] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Split Wrong Type Experiment Id] ✅ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Split Extra Experiment Id] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Split Wrong Type Variant Key] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Wrong Rule Type Literal] ✅ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Unknown Fields] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Old Server Variant] ✅ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Old Server Boolean] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Old Server Null Variant] ✅ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Old Server False] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.V4 Value Takes Precedence] ✅ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Missing Flag] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Targeting Match Targeted Release] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Targeting Match Percentage Rollout] ✅ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Rollout Miss Percentage Rollout] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Rollout Miss Experiment] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Experiment Paused] ✅ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Holdout] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Holdout Variant Key] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.No Rule Match] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Missing Group Key] ✅ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Dependency Error] ❌ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Error] ❌ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Error With Value] ❌ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Malformed Sibling Isolation] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Partial Split String Value] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.V1 At V4] ✅ 7ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.V1 Failed] ❌ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Integral Json Number Context] ✅ 8ms
Legacy Getters.Legacy Getter Reads Reader Fixture[Readers.Flag Key Seed] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.String.Target] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.String.Rollout Hit] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.String.Miss Return Default] ✅ 7ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.String.Miss Return Default Null] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.String.Miss Continue] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.String.No Match Default] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.String.No Match Null] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.String.Order First Match] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.String.Order Targeting Miss] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Target] ✅ 9ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Rollout Hit] ✅ 7ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Miss Return Default] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Miss Return Default Null] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Miss Continue] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.No Match Default] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.No Match Null] ✅ 26ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Order First Match] ✅ 9ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Order Targeting Miss] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Object.Target] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Object.Rollout Hit] ✅ 9ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Object.Miss Return Default] ✅ 9ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Object.Miss Return Default Null] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Object.Miss Continue] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Object.No Match Default] ✅ 9ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Object.No Match Null] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Object.Order First Match] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Object.Order Targeting Miss] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.String.Unicode] ✅ 7ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.String.Looks Boolean] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Zero] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Negative Decimal] ✅ 7ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Short Decimal] ✅ 9ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Exponent] ✅ 7ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Max Safe Integer] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Number.Min Safe Integer] ✅ 8ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Object.Empty] ✅ 9ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Object.Nested] ✅ 9ms
Legacy Getters.Legacy Getter Reads Typed Value[V2 Value.Object.Max Depth] ✅ 9ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Complete Split] ✅ 7ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Partial Split Missing Config Version] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Partial Split Missing Rule Type] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Partial Split Missing Rule Id] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Partial Split Missing Variant Key] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Split Wrong Type Config Version] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Split Wrong Type Rule Type] ✅ 7ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Split Wrong Type Rule Id] ✅ 7ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Split Wrong Type Experiment Id] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Split Extra Experiment Id] ✅ 5ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Split Wrong Type Variant Key] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Wrong Rule Type Literal] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Unknown Fields] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Old Server Variant] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Old Server Boolean] ✅ 5ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Old Server Null Variant] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Old Server False] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.V4 Value Takes Precedence] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Missing Flag] ✅ 5ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Targeting Match Targeted Release] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Targeting Match Percentage Rollout] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Rollout Miss Percentage Rollout] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Rollout Miss Experiment] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Experiment Paused] ✅ 5ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Holdout] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Holdout Variant Key] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.No Rule Match] ✅ 7ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Missing Group Key] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Dependency Error] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Error] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Error With Value] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Malformed Sibling Isolation] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Partial Split String Value] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.V1 At V4] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Integral Json Number Context] ✅ 6ms
Legacy Payloads.Legacy Payload Reads Reader Fixture[Readers.Flag Key Seed] ✅ 7ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.String.Target] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.String.Rollout Hit] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.String.Miss Return Default] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.String.Miss Return Default Null] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.String.Miss Continue] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.String.No Match Default] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.String.No Match Null] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.String.Order First Match] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.String.Order Targeting Miss] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Target] ✅ 5ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Rollout Hit] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Miss Return Default] ✅ 7ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Miss Return Default Null] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Miss Continue] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.No Match Default] ✅ 5ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.No Match Null] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Order First Match] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Order Targeting Miss] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Object.Target] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Object.Rollout Hit] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Object.Miss Return Default] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Object.Miss Return Default Null] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Object.Miss Continue] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Object.No Match Default] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Object.No Match Null] ✅ 5ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Object.Order First Match] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Object.Order Targeting Miss] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.String.Unicode] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.String.Looks Boolean] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Zero] ✅ 5ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Negative Decimal] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Short Decimal] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Exponent] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Max Safe Integer] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Number.Min Safe Integer] ✅ 5ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Object.Empty] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Object.Nested] ✅ 6ms
Legacy Payloads.Legacy Payload Is The Typed Value[V2 Value.Object.Max Depth] ✅ 6ms

Failures

legacy_getters.legacy_getter_reads_reader_fixture[readers.dependency_error]

[readers.dependency_error] legacy value: expected false, got null

legacy_getters.legacy_getter_reads_reader_fixture[readers.error]

[readers.error] legacy value: expected false, got null

legacy_getters.legacy_getter_reads_reader_fixture[readers.error_with_value]

[readers.error_with_value] legacy value: expected false, got null

legacy_getters.legacy_getter_reads_reader_fixture[readers.v1_failed]

[readers.v1_failed] legacy value: expected false, got null

Feature_Flags_Local_Evaluation Tests

✅ 4/4 tests passed

View Details
Test Status Duration
Versioned Boolean Matching.Matching Version Missing ✅ 54ms
Versioned Boolean Matching.Matching Version 1 ✅ 54ms
Versioned Boolean Matching.Matching Version 2 ✅ 53ms
Versioned Boolean Matching.Version Only Reload 1 2 1 2 Missing ✅ 29ms

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SDK performance: posthog-python

Benchmarks completed. No changes flagged for review.

Flags require at least a 5% change in the median and all six pairs agreeing on direction. This is a noise filter, not proof of a performance change or a CI gate.

View all results
Test Measurement Before PR With PR Change Assessment
Capture and deliver events (32-byte payload, burst)
Shard: capture		 Managed heap after settling — — — unavailable; base:​ unsupported; head:​ unsupported; base:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​; head:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​
Capture and deliver events (4,096-byte payload, burst)
Shard: capture		 Managed heap after settling — — — unavailable; base:​ unsupported; head:​ unsupported; base:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​; head:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​
Capture and deliver events (32-byte payload, steady)
Shard: capture		 Managed heap after settling — — — unavailable; base:​ unsupported; head:​ unsupported; base:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​; head:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​
Capture and deliver events (4,096-byte payload, steady)
Shard: capture		 Managed heap after settling — — — unavailable; base:​ unsupported; head:​ unsupported; base:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​; head:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​
Queue an event (32-byte payload)
Shard: capture		 Allocated memory per operation — — — unavailable; base:​ unsupported; head:​ unsupported; base:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​; head:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​
Queue an event (32-byte payload)
Shard: capture		 Allocations per operation — — — unavailable; base:​ unsupported; head:​ unsupported; base:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​; head:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​
Queue an event (4,096-byte payload)
Shard: capture		 Allocated memory per operation — — — unavailable; base:​ unsupported; head:​ unsupported; base:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​; head:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​
Queue an event (4,096-byte payload)
Shard: capture		 Allocations per operation — — — unavailable; base:​ unsupported; head:​ unsupported; base:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​; head:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​
Evaluate 1,000 flags under concurrent load
Shard: flags-memory		 Managed heap after settling — — — unavailable; base:​ unsupported; head:​ unsupported; base:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​; head:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​
Refresh 1,000 flag definitions
Shard: flags-memory		 Managed heap after settling — — — unavailable; base:​ unsupported; head:​ unsupported; base:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​; head:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​
Capture and deliver events (32-byte payload, burst)
Shard: capture		 Allocated memory per operation 113.97 KiB/op 113.97 KiB/op <0.1% more memory Not flagged
Capture and deliver events (32-byte payload, burst)
Shard: capture		 Allocations per operation 1,104.58 count/op 1,104.59 count/op <0.1% more Not flagged
Capture and deliver events (32-byte payload, burst)
Shard: capture		 Time per operation 63.42 µs/op 63.45 µs/op <0.1% more time Not flagged
Capture and deliver events (32-byte payload, burst)
Shard: capture		 Idle process memory (RSS) 35.9 MiB 36 MiB 0.3% more memory Not flagged
Capture and deliver events (32-byte payload, burst)
Shard: capture		 Observed peak process memory (RSS) 37.61 MiB 37.71 MiB 0.3% more memory Not flagged
Capture and deliver events (32-byte payload, burst)
Shard: capture		 Process memory after settling (RSS) 37.61 MiB 37.71 MiB 0.3% more memory Not flagged
Capture and deliver events (32-byte payload, burst)
Shard: capture		 Process CPU time per operation 65.79 µs/op 64.41 µs/op 2.1% less time Not flagged
Capture and deliver events (32-byte payload, burst)
Shard: capture		 Lifetime peak process memory (RSS) 40.38 MiB 40.38 MiB No observed change Not flagged
Capture and deliver events (4,096-byte payload, burst)
Shard: capture		 Allocated memory per operation 166.54 KiB/op 166.54 KiB/op <0.1% more memory Not flagged
Capture and deliver events (4,096-byte payload, burst)
Shard: capture		 Allocations per operation 1,097.57 count/op 1,097.57 count/op No observed change Not flagged
Capture and deliver events (4,096-byte payload, burst)
Shard: capture		 Time per operation 86.78 µs/op 87.55 µs/op 0.9% more time Not flagged
Capture and deliver events (4,096-byte payload, burst)
Shard: capture		 Idle process memory (RSS) 40.84 MiB 40.87 MiB <0.1% more memory Not flagged
Capture and deliver events (4,096-byte payload, burst)
Shard: capture		 Observed peak process memory (RSS) 45.87 MiB 45.9 MiB <0.1% more memory Not flagged
Capture and deliver events (4,096-byte payload, burst)
Shard: capture		 Process memory after settling (RSS) 45.87 MiB 45.9 MiB <0.1% more memory Not flagged
Capture and deliver events (4,096-byte payload, burst)
Shard: capture		 Process CPU time per operation 84.85 µs/op 84.17 µs/op 0.8% less time Not flagged
Capture and deliver events (4,096-byte payload, burst)
Shard: capture		 Lifetime peak process memory (RSS) 50.73 MiB 50.73 MiB <0.1% less memory Not flagged
Capture and deliver events (32-byte payload, steady)
Shard: capture		 Allocated memory per operation 118.11 KiB/op 118.11 KiB/op <0.1% less memory Not flagged
Capture and deliver events (32-byte payload, steady)
Shard: capture		 Allocations per operation 1,144.48 count/op 1,144.46 count/op <0.1% fewer Not flagged
Capture and deliver events (32-byte payload, steady)
Shard: capture		 Time per operation 73.72 µs/op 73.49 µs/op 0.3% less time Not flagged
Capture and deliver events (32-byte payload, steady)
Shard: capture		 Idle process memory (RSS) 35.94 MiB 35.95 MiB <0.1% more memory Not flagged
Capture and deliver events (32-byte payload, steady)
Shard: capture		 Observed peak process memory (RSS) 36.03 MiB 36.04 MiB <0.1% more memory Not flagged
Capture and deliver events (32-byte payload, steady)
Shard: capture		 Process memory after settling (RSS) 36.03 MiB 36.04 MiB <0.1% more memory Not flagged
Capture and deliver events (32-byte payload, steady)
Shard: capture		 Process CPU time per operation 75.72 µs/op 75.85 µs/op 0.2% more time Not flagged
Capture and deliver events (32-byte payload, steady)
Shard: capture		 Lifetime peak process memory (RSS) 40.38 MiB 40.38 MiB No observed change Not flagged
Capture and deliver events (4,096-byte payload, steady)
Shard: capture		 Allocated memory per operation 170.99 KiB/op 170.99 KiB/op <0.1% less memory Not flagged
Capture and deliver events (4,096-byte payload, steady)
Shard: capture		 Allocations per operation 1,137.32 count/op 1,137.31 count/op <0.1% fewer Not flagged
Capture and deliver events (4,096-byte payload, steady)
Shard: capture		 Time per operation 93.36 µs/op 92.21 µs/op 1.2% less time Not flagged
Capture and deliver events (4,096-byte payload, steady)
Shard: capture		 Idle process memory (RSS) 40.7 MiB 40.65 MiB 0.1% less memory Not flagged
Capture and deliver events (4,096-byte payload, steady)
Shard: capture		 Observed peak process memory (RSS) 40.7 MiB 40.65 MiB 0.1% less memory Not flagged
Capture and deliver events (4,096-byte payload, steady)
Shard: capture		 Process memory after settling (RSS) 40.69 MiB 40.64 MiB 0.1% less memory Not flagged
Capture and deliver events (4,096-byte payload, steady)
Shard: capture		 Process CPU time per operation 89.94 µs/op 90.28 µs/op 0.4% more time Not flagged
Capture and deliver events (4,096-byte payload, steady)
Shard: capture		 Lifetime peak process memory (RSS) 40.97 MiB 40.97 MiB <0.1% more memory Not flagged
Queue an event (32-byte payload)
Shard: capture		 Caller-thread CPU time per operation 42.59 µs/op 42.57 µs/op <0.1% less time Not flagged
Queue an event (32-byte payload)
Shard: capture		 Time per operation 42.97 µs/op 42.67 µs/op 0.7% less time Not flagged
Queue an event (4,096-byte payload)
Shard: capture		 Caller-thread CPU time per operation 42.48 µs/op 42.34 µs/op 0.3% less time Not flagged
Queue an event (4,096-byte payload)
Shard: capture		 Time per operation 42.47 µs/op 42.34 µs/op 0.3% less time Not flagged
Evaluate all 10 flags
Shard: flags-scaling		 Allocated memory per operation 200.98 KiB/op 201.02 KiB/op <0.1% more memory Not flagged
Evaluate all 10 flags
Shard: flags-scaling		 Allocations per operation 2,339.33 count/op 2,339.33 count/op No observed change Not flagged
Evaluate all 10 flags
Shard: flags-scaling		 Time per operation 131.24 µs/op 129.31 µs/op 1.5% less time Not flagged
Evaluate all 10 flags
Shard: flags-scaling		 Process CPU time per operation 131.2 µs/op 129.3 µs/op 1.4% less time Not flagged
Evaluate all 100 flags
Shard: flags-scaling		 Allocated memory per operation 1.93 MiB/op 1.93 MiB/op <0.1% more memory Not flagged
Evaluate all 100 flags
Shard: flags-scaling		 Allocations per operation 23,013.56 count/op 23,013.56 count/op No observed change Not flagged
Evaluate all 100 flags
Shard: flags-scaling		 Time per operation 1.21 ms/op 1.21 ms/op <0.1% less time Not flagged
Evaluate all 100 flags
Shard: flags-scaling		 Process CPU time per operation 1.21 ms/op 1.21 ms/op <0.1% more time Not flagged
Evaluate all 1,000 flags
Shard: flags-scaling		 Allocated memory per operation 19.24 MiB/op 19.24 MiB/op <0.1% more memory Not flagged
Evaluate all 1,000 flags
Shard: flags-scaling		 Allocations per operation 229,654.94 count/op 229,654.94 count/op No observed change Not flagged
Evaluate all 1,000 flags
Shard: flags-scaling		 Time per operation 11.86 ms/op 11.83 ms/op 0.3% less time Not flagged
Evaluate all 1,000 flags
Shard: flags-scaling		 Process CPU time per operation 11.86 ms/op 11.82 ms/op 0.3% less time Not flagged
Evaluate 1,000 flags under concurrent load
Shard: flags-memory		 Idle process memory (RSS) 42.38 MiB 42.28 MiB 0.2% less memory Not flagged
Evaluate 1,000 flags under concurrent load
Shard: flags-memory		 Observed peak process memory (RSS) 42.7 MiB 42.6 MiB 0.2% less memory Not flagged
Evaluate 1,000 flags under concurrent load
Shard: flags-memory		 Process memory after settling (RSS) 42.7 MiB 42.6 MiB 0.2% less memory Not flagged
Evaluate 1,000 flags under concurrent load
Shard: flags-memory		 Lifetime peak process memory (RSS) 42.57 MiB 42.53 MiB <0.1% less memory Not flagged
Refresh 1,000 flag definitions
Shard: flags-memory		 Idle process memory (RSS) 42.11 MiB 41.74 MiB 0.9% less memory Not flagged
Refresh 1,000 flag definitions
Shard: flags-memory		 Observed peak process memory (RSS) 42.19 MiB 42.14 MiB 0.1% less memory Not flagged
Refresh 1,000 flag definitions
Shard: flags-memory		 Process memory after settling (RSS) 41.52 MiB 41.49 MiB <0.1% less memory Not flagged
Refresh 1,000 flag definitions
Shard: flags-memory		 Lifetime peak process memory (RSS) 42.54 MiB 42.56 MiB <0.1% more memory Not flagged
Evaluate one boolean flag
Shard: flags-single		 Allocated memory per operation 15.06 KiB/op 15.06 KiB/op No observed change Not flagged
Evaluate one boolean flag
Shard: flags-single		 Allocations per operation 173.76 count/op 173.76 count/op No observed change Not flagged
Evaluate one boolean flag
Shard: flags-single		 Time per operation 13.9 µs/op 13.96 µs/op 0.4% more time Not flagged
Evaluate one boolean flag
Shard: flags-single		 Process CPU time per operation 13.91 µs/op 13.96 µs/op 0.4% more time Not flagged
Evaluate a cohort-filtered flag
Shard: flags-single		 Allocated memory per operation 23.14 KiB/op 23.14 KiB/op No observed change Not flagged
Evaluate a cohort-filtered flag
Shard: flags-single		 Allocations per operation 270.27 count/op 270.27 count/op No observed change Not flagged
Evaluate a cohort-filtered flag
Shard: flags-single		 Time per operation 21.83 µs/op 21.97 µs/op 0.6% more time Not flagged
Evaluate a cohort-filtered flag
Shard: flags-single		 Process CPU time per operation 21.83 µs/op 21.97 µs/op 0.6% more time Not flagged
Evaluate a flag (early match)
Shard: flags-single		 Allocated memory per operation 35.73 KiB/op 35.73 KiB/op No observed change Not flagged
Evaluate a flag (early match)
Shard: flags-single		 Allocations per operation 387.27 count/op 387.27 count/op No observed change Not flagged
Evaluate a flag (early match)
Shard: flags-single		 Time per operation 27.74 µs/op 27.4 µs/op 1.2% less time Not flagged
Evaluate a flag (early match)
Shard: flags-single		 Process CPU time per operation 27.74 µs/op 27.4 µs/op 1.2% less time Not flagged
Evaluate a flag (late match)
Shard: flags-single		 Allocated memory per operation 53.61 KiB/op 53.61 KiB/op No observed change Not flagged
Evaluate a flag (late match)
Shard: flags-single		 Allocations per operation 576.27 count/op 576.27 count/op No observed change Not flagged
Evaluate a flag (late match)
Shard: flags-single		 Time per operation 38.64 µs/op 38.44 µs/op 0.5% less time Not flagged
Evaluate a flag (late match)
Shard: flags-single		 Process CPU time per operation 38.64 µs/op 38.43 µs/op 0.5% less time Not flagged
Evaluate a flag (no match)
Shard: flags-single		 Allocated memory per operation 52.16 KiB/op 52.16 KiB/op No observed change Not flagged
Evaluate a flag (no match)
Shard: flags-single		 Allocations per operation 556.77 count/op 556.77 count/op No observed change Not flagged
Evaluate a flag (no match)
Shard: flags-single		 Time per operation 34.92 µs/op 35.11 µs/op 0.5% more time Not flagged
Evaluate a flag (no match)
Shard: flags-single		 Process CPU time per operation 34.92 µs/op 35.11 µs/op 0.5% more time Not flagged
Evaluate a property-filtered flag
Shard: flags-single		 Allocated memory per operation 17.85 KiB/op 17.85 KiB/op No observed change Not flagged
Evaluate a property-filtered flag
Shard: flags-single		 Allocations per operation 198.27 count/op 198.27 count/op No observed change Not flagged
Evaluate a property-filtered flag
Shard: flags-single		 Time per operation 16.57 µs/op 16.44 µs/op 0.8% less time Not flagged
Evaluate a property-filtered flag
Shard: flags-single		 Process CPU time per operation 16.57 µs/op 16.44 µs/op 0.8% less time Not flagged
Evaluate a regex-filtered flag
Shard: flags-single		 Allocated memory per operation 19.24 KiB/op 19.24 KiB/op No observed change Not flagged
Evaluate a regex-filtered flag
Shard: flags-single		 Allocations per operation 210.77 count/op 210.77 count/op No observed change Not flagged
Evaluate a regex-filtered flag
Shard: flags-single		 Time per operation 17.41 µs/op 17.48 µs/op 0.4% more time Not flagged
Evaluate a regex-filtered flag
Shard: flags-single		 Process CPU time per operation 17.41 µs/op 17.48 µs/op 0.4% more time Not flagged
Evaluate a rollout flag
Shard: flags-single		 Allocated memory per operation 14.05 KiB/op 14.05 KiB/op No observed change Not flagged
Evaluate a rollout flag
Shard: flags-single		 Allocations per operation 160.76 count/op 160.76 count/op No observed change Not flagged
Evaluate a rollout flag
Shard: flags-single		 Time per operation 13.05 µs/op 13.24 µs/op 1.5% more time Not flagged
Evaluate a rollout flag
Shard: flags-single		 Process CPU time per operation 13.05 µs/op 13.24 µs/op 1.5% more time Not flagged
Evaluate a multivariate flag
Shard: flags-single		 Allocated memory per operation 15.22 KiB/op 15.22 KiB/op No observed change Not flagged
Evaluate a multivariate flag
Shard: flags-single		 Allocations per operation 177.77 count/op 177.77 count/op No observed change Not flagged
Evaluate a multivariate flag
Shard: flags-single		 Time per operation 14.62 µs/op 14.51 µs/op 0.8% less time Not flagged
Evaluate a multivariate flag
Shard: flags-single		 Process CPU time per operation 14.62 µs/op 14.51 µs/op 0.8% less time Not flagged

Values are medians of paired measurements. Not flagged does not mean unchanged. Unavailable means a measurement could not be provided, not zero. Estimated allocation measurements retain their instrumentation uncertainty. RSS measures the whole process, not just SDK allocations; observed peaks are sampled checkpoints. Paired ranges in the diagnostics describe variability, not confidence intervals.

Each shard uses its own runner; compare Before PR against With PR within a row, not across shards.

Compared c0b023073cb226e0491117a703fdff799bb404c0 → 0621e4d20f9c782a2ddcc7010cef89993ecb105c.

Full report and diagnostics

102 metric rows; 102 rows shown in all results. Omitted or shortened data remain in comparison.json, including per-runner environments, resource limits, measurement methods, samples and checkpoints.

@marandaneto
marandaneto marked this pull request as ready for review November 12, 2026 12:13
@marandaneto
marandaneto requested a review from a team as a code owner November 12, 2026 12:13
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No security issues were found in this pull request.

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PostHog Review · Standard · reviewed 0f9c9cf: 1 Should fix.

See this review and its findings in PostHog Review. Comment @posthog review --deep for a Deep review. A Deep review takes longer and looks deeper than a Standard review.

Comment thread posthog/feature_flag_evaluations.py Resolved
@marandaneto marandaneto mentioned this pull request Nov 12, 2026
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@posthog-project-board-bot posthog-project-board-bot Bot moved this to In Review in Feature Flags Nov 12, 2026
@haacked haacked self-assigned this Nov 12, 2026

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