Redka is a Redis-compatible data store implemented in Go, using SQLite or PostgreSQL as the storage backend. It reimplements core Redis data structures (strings, lists, sets, hashes, sorted sets) with full TTL support, key scanning, and set/sorted-set aggregation operations. The system can be deployed either as an embedded Go library (via the `redka` module) or as a standalone RESP-compatible server (single binary or Docker image). Architecture follows a clean layered design: a top-level `DB` struct provides transactional access to per-type repositories (e.g., `ZSet()`, `Hash()`), which in turn use a dialect abstraction layer (`sqlx`) to generate SQLite- or PostgreSQL-specific queries. The RESP server is built on `tidwall/redcon` with a command dispatch pattern and a reusable parser combinator framework for argument parsing. While feature-complete for core Redis operations, the project is explicitly in maintenance mode—no new features are planned, and documentation notes incomplete command coverage (e.g., blocking operations, some sorted set commands). The codebase is well-structured with extensive test coverage, but Postgres support shows signs of drift (many queries aliased to SQLite) and the command dispatch switch has grown large.