line/armeria

Limit the cardinality of request metrics

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#2,149 opened on Oct 3, 2019

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 (9 comments) (3 reactions) (0 assignees)Java (863 forks)batch import
good first issuenew feature

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Description

I heard that RestTemplate logs a warning about large cardinality of meter tags and refuses to record the metrics for the tag combinations generated after then. We could also implement something similar.

Contributor guide

Research direction
Examine the RestTemplate implementation for metric cardinality limits and integrate a similar mechanism into Armeria's metric handling.
Tech stack
java
Domain
backendobservability
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Java
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60