envoyproxy/envoy

Support Caching in External Auth Filter

Open

#3,023 opened on Apr 7, 2018

View on GitHub
 (7 comments) (46 reactions) (0 assignees)C++ (5,373 forks)batch import
enhancementhelp wanted

Repository metrics

Stars
 (27,997 stars)
PR merge metrics
 (Avg merge 8d) (378 merged PRs in 30d)

Description

Currently External Auth filter reaches out to configured external auth service for every request. This is a performance penalty. It should support some level of caching so that it does not go to external auth for every request

Contributor guide

Research direction
Start by examining the existing External Auth filter implementation in Envoy, particularly the filter's `decodeHeaders` method where the external authorization call is made. Identify points where caching can be introduced. Consider using Envoy's built in cache infrastructure or implementing a simple time based cache. Write integration tests to verify the caching behavior.
Tech stack
cpp
Domain
backendinfrastructure
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
C++Git
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60