Engineering Blog

Engineering deep-dives from the SlashFeed team — Elixir, Phoenix, and how the product is built.

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When to reach for Cassandra alongside Postgres

Why SlashFeed runs a third datastore — Cassandra via Xandra — next to PostgreSQL and ClickHouse, and how the BoringRSS.Cassandra client is wired so it can stay switched off until a real write path needs it.

Jul 1, 2026

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