FastHash is a simple, fast in-memory key-value store written in C++.

• Core Features (Completed)

  • Basic key-value SET and GET commands
  • DEL command to delete keys
  • EXPIRE command to set TTL (time-to-live) on keys
  • TTL command to get remaining TTL of keys
  • SETEX command (set key with expiry in one command)
  • EXISTS command to check presence of keys
  • KEYS command to list all keys (with pattern support planned)
  • FLUSHALL command to clear all keys in the store
  • SAVE command to persist the current key-value store snapshot to disk (via main thread - to be fixed) (JSON format)
  • LOAD command to load persisted data from disk on startup
  • In-House Primary Data Structures

• Persistence (Planned~WIP)

  • Background snapshot saving to avoid blcking the main thread
  • AOF logging for durability and incremental persistence
  • Periodic snapshotting combined with AOF for crash recovery
  • Configurable persistence options (enable/disable, frequency)

• Networking Layer (In Progress)

  • TCP server using standalone ASIO (Maybe In house TCP Server ? Look into it) <--*
  • Async multi-client handling with full concurrency support
  • Command parsing over network (line-based, later RESP protocol)
  • Well-structured, production-grade request-response lifecycle
  • Client session management, connection cleanup, error handling
  • TLS/SSL support for encrypted connections (planned)

• Advanced Data Types and Commands (Planned)

  • Hashes (maps/dictionaries) as value types (https://redis.io/technology/data-structures/) <--*
  • Lists, Sets, Sorted Sets (ZSets)
  • INCR/DECR numeric commands
  • Transactions and Lua scripting support

• SRE (Planned)

  • Replication (master-slave wala)
  • Persistence guarantees and durability levels
  • Cluster mode with sharding and failover
  • Monitoring and metrics (Prometheus integration)

• Tooling & Developer Experience (Planned)

  • test suites
  • docs and examples