api rate limiting: Create a helper service for exposing per-user (per-bucket) metrics
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	daniel
	Oct 22 2025, 4:15 PM

Description

Envoy's ratelimit service can only provide requets-based metrics. In order to gain insights on e.g. what percentage of *users* exceeds a given rate limit, we need a helper that can analyze the state of the counter buckets in redis.

Details

Related Changes in Gerrit:

	Subject	Repo	Branch	Lines +/-
	charts: add redioscope chart and service	operations/deployment-charts	master	+2 K -6

Customize query in gerrit

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Status	Assigned	Task
Open	None	T399291 Epic: API Rate Limiting Architecture
Open	None	T412585 Epic: Enforce API rate limits (WE5.1.3c)
Open	daniel	T398919 Epic: API rate limiting dry run (WE5.1.3b)
Resolved	daniel	T407999 api rate limiting: Create a helper service for exposing per-user (per-bucket) metrics
Resolved	brennen	T409821 Move redioscope repo under mediawiki/services
Resolved	daniel	T410559 Publish redioscope image to wmf registry for deployment on the aux cluster
Resolved	Clement_Goubert	T413999 Create namespace and support files for redioscope

Event Timeline

daniel created this task.Oct 22 2025, 4:15 PM

daniel renamed this task from api rate limiting: Create a helper service for exposing bucket statistics to api rate limiting: Create a helper service for exposing per-user (per-bucket) metrics.Oct 24 2025, 7:56 AM

daniel updated the task description. (Show Details)

JTweed-WMF moved this task from Inbox, needs triage to Next (DO NOT USE) on the MediaWiki-Platform-Team board.Oct 30 2025, 3:30 PM

daniel changed the task status from Open to In Progress.Oct 30 2025, 5:03 PM

A first version of redioscope is ready for testing/review, see https://gitlab.wikimedia.org/daniel/redioscope

daniel mentioned this in T409821: Move redioscope repo under mediawiki/services.Nov 11 2025, 11:28 AM

daniel added a subtask: T409821: Move redioscope repo under mediawiki/services.

daniel mentioned this in T406498: Test api rate limiting on production cluster.Nov 12 2025, 12:05 PM

brennen closed subtask T409821: Move redioscope repo under mediawiki/services as Resolved.Nov 14 2025, 10:43 PM

daniel created subtask T410559: Publish redioscope image to wmf registry for deployment on the aux cluster.Nov 19 2025, 8:19 PM

daniel mentioned this in T410559: Publish redioscope image to wmf registry for deployment on the aux cluster.

Change #1207256 had a related patch set uploaded (by Daniel Kinzler; author: Daniel Kinzler):

[operations/deployment-charts@master] charts: add redioscope chart