feat: L2 Cache with Valkey Client Side Hash Ring#4033

Draft

larry-dalmeida wants to merge 16 commits into

zalando:masterfrom

larry-dalmeida:feat/cache-client-side-valkey-hash-ring

Commits on May 26, 2026

feat: add ValkeyStorage with L1 fallback for cache() filter
larry-dalmeida
committed

Commits on May 27, 2026

feat: split valkey_fallback counter and add valkey_miss metric
larry-dalmeida
committed
fix: address WP6 code review feedback
larry-dalmeida
committed
feat: add periodic lru_bytes gauge scrape every 10s
larry-dalmeida
committed
feat: log storage errors with per-site messages
larry-dalmeida
committed
test: must-revalidate forces coalesce when stale
larry-dalmeida
committed
test: unsafe method + 4xx does not invalidate cached entry
larry-dalmeida
committed
test: oversized LRU entry increments lru_oversized and is not stored
larry-dalmeida
committed
test: reval_dropped and L1 fallback write verification
larry-dalmeida
committed
feat: tag cache_status, cache_key, cache_ttl_remaining_ms on trace span
larry-dalmeida
committed
cache: promote storage Set/Delete error logs from Debug to Warn
larry-dalmeida
committed

Commits on May 28, 2026

Commits on May 29, 2026

refactor: ratelimit registry creation to pass ring clients such that we can reuse the valkey ring client in the cache filter creation.
szuecs
committed

Commits on Jun 1, 2026

Merge pull request #2 from zalando/refactor/ratelimit-to-pass-ring-clients
larry-dalmeida
authored

Commits on Jun 2, 2026

Fix registration of cache filter
larry-dalmeida
committed