AL·IX
A Lifeform, version IX

Only the truth is load-bearing

Her state read & write Redis: hot cache fast · not load-bearing PostgreSQL: the truth durable · load-bearing cache gone? fall back here the cache makes her fast. the store makes her correct. only the store is load-bearing when something fails she gets slower or quieter, never wrong

The cache makes her fast; the durable store makes her correct. If the cache dies, everything falls back to the store, so she gets slower, never wrong.

Redis holds Alix's state for speed, but it is never load-bearing: if it fails, everything falls back to PostgreSQL, and a test suite proves her correctness doesn't depend on the cache. Only the durable, verifiable store is allowed to be load-bearing.

Read the entry: Nothing load-bearing but the truth →


← All diagrams