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engineeringJuly 4, 2026· 5 min read

Restart-safe by design: a cache that survives a crash without losing a thing

A cache that forgets everything on restart isn't much of a memory. Crowkis writes durably first, so a crash, a deploy, or a reboot never costs you a single learned answer.

There's a quiet assumption baked into a lot of caches: it's fine to lose everything on restart, because it's 'just a cache.' For an LLM cache that assumption is expensive. Every lost entry is an answer you'll pay the model to regenerate, and every deploy becomes a cold-start tax on your bill and your latency.

In plain words: Crowkis writes to a crash-safe log before it acknowledges a write, then keeps that data in sorted files on disk. Pull the plug and it replays the log on the way back up, nothing learned is lost.
the durable write path

Log first, then memory, then disk, a reboot replays the log and picks up where it left off.

This is what lets Crowkis double as durable agent memory, not just a volatile cache. Years of an agent's learned context can live on disk and come back warm after a restart, because durability was the starting assumption, not a feature bolted on later.

The bottom line

A restart should be a non-event, not a bill. Write durably first, and your cache, and your agents' memory, outlives every crash and every deploy.