Releases · Tochemey/distcache

✨ Highlights

New admin diagnostics server with JSON endpoints for peers and keyspace stats.
Warmup & hot key prefetching on cluster join/leave events.
Engine-level tracing/metrics (OpenTelemetry) around core operations.
Keyspace-level overrides for TTL, timeouts, max bytes, warm keys, and protection policies.
New GetMany API and runtime keyspace updates via UpdateKeySpace.

Admin diagnostics (admin package)
- /peers and /keyspaces endpoints.
- Keyspace snapshots include cache sizes and stats when available.
Warmup & hot keys (warmup package)
- Hot key tracking and prefetch on join/leave.
- Concurrency and timeout controls.
Batch operations
- GetMany returns values in input order.
Dynamic keyspace updates
- UpdateKeySpace recreates the group and can trigger warmup.
DataSource protection
- Engine-level and per-keyspace rate limiting and circuit breaking.

WithDataSourceProtector removed → use WithRateLimiter and WithCircuitBreaker.
Keyspace config now flows through main Config options (no KeySpaceConfigProvider).
- Use WithKeySpaceMaxBytes, WithKeySpaceDefaultTTL, WithKeySpaceReadTimeout,
  WithKeySpaceWriteTimeout, WithKeySpaceWarmKeys, WithKeySpaceRateLimiter,
  WithKeySpaceCircuitBreaker.
Admin and warmup configs now live in dedicated packages:
- admin.Config
- warmup.Config

WaitTimeout > 0 for rate limiting may return context.DeadlineExceeded when waiting exceeds the limit.
Admin endpoints should be protected (reverse proxy / ACLs) in production.

README expanded with quick start, admin endpoint examples, warmup behavior, and precedence rules.

Full Changelog: v0.3.0...v0.4.0