Feature Stores¶
ff4k-core ships InMemoryFeatureStore and InMemoryPropertyStore. Persistent stores live in their own modules so you only pull the driver you need:
| Store | Module | Databases | Platforms |
|---|---|---|---|
| JDBC | ff4k-store-jdbc |
PostgreSQL, MySQL, any JdbcDialect |
JVM |
| SQLite | ff4k-store-sqlite |
SQLite (SQLDelight) | JVM |
Every persistent store is verified by the same contract tests. Wrap any store with cached() to avoid a round trip per flag check.
To write your own, see Custom Feature Store.