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Persistence in Ahnlich

Overview​

By default, both Ahnlich DB and Ahnlich AI services run in in-memory mode, meaning all data (keys, predicates, embeddings, and indices) is stored only in RAM. This is fast for retrieval, but it also means:

  • All data is lost when the service restarts.

  • Stores and indices must be recreated after every shutdown.

  • Models and embeddings need to be recomputed repeatedly.

Persistence solves this by periodically saving data to disk and reloading it on startup. This ensures that your DB and AI services are fault-tolerant, production-ready, and stateful across restarts.