Group: Simplj Flair

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Shared zero-dependency utilities used by every FlairCache module — currently the single FlairCacheThreadFactory through which all FlairCache threads are created (daemon, named). Has zero dependencies on any other FlairCache module.

Zero-dependency Hybrid Logical Clock (HLC) for causal timestamps and Last-Write-Wins conflict resolution in distributed systems. Combines physical wall-clock time with a logical counter to produce monotonically increasing timestamps ...

Fast zero-dependency binary serialization for FlairCache — hand-rolled POJO ↔ ByteBuffer encoding with no reflection and no external libraries. Usable standalone in any Java project that needs compact, efficient binary serialization ...

Fast embedded local in-memory cache backed by ConcurrentHashMap and StampedLock. Provides TTL-based expiry, LRU/LFU/size-based eviction, and sub-microsecond reads.

Zero-dependency non-blocking NIO TCP server and client for FlairCache. Operates on raw byte[] only — callers are responsible for encoding and decoding.

Zero-dependency SWIM gossip protocol for peer discovery and failure detection over UDP. Gossip is independent of TCP transport — it uses DatagramSocket, not SocketChannel.

Multi-node TCP data propagation with ACK tracking and configurable consistency modes (EVENTUAL, QUORUM, STRONG). Contains the frame encoder/decoder and the replication fanout coordinator.

Fast Local Access with In-memory Replication — embeddable, zero-infra, JDK-only distributed Java cache. Add this single dependency to get all FlairCache modules: serial, transport, gossip, hlc, store, replication, bootstrap, dsl, ...

Full state synchronisation for new nodes joining an existing FlairCache cluster. Transfers the complete current store contents over TCP in chunked SYNC frames so a joining node is immediately consistent.

SQL-like query DSL for filtering, joining, grouping, and aggregating over in-memory data. Accepts any Map or Collection as input — has no dependency on the FlairCache store.

Typed in-process pub/sub engine for subscribing to data change events (PUT, DELETE, EXPIRE). WatchRegistry is a standalone event bus — it has no dependency on the FlairCache store.

JMX metrics registry wired to all FlairCache internals. Exposes CacheMetrics (hit/miss rate), ReplicationMetrics (lag, pending/dropped frames), ClusterMetrics (alive/suspected nodes), and EvictionMetrics (evicted/expired entries) ...

JMH micro-benchmarks for all FlairCache critical paths. Not published to Maven Central.

End-to-end integration test suite covering all FlairCache functionality through the FlairCache facade. All tests run in-JVM with an embedded FlairCluster — no Docker, no external infrastructure required.

Fast Local Access with In-memory Replication — parent POM for all FlairCache modules