Queries/mutations split (reads-writes duality)

Generated from mcp/patterns.registry.json — do not edit by hand; change the registry and run bun run patterns:build.

Index card — the docs below are the canonical explanation; deep-tier pattern pages additionally carry invariants and emulation notes.

Category: Databases & Storage · Tier: light · Risk: low — code organization pattern, no external dependency

Splits each domain's database access into separate queries.ts (reads) and mutations.ts (writes) modules.

When to use: Apply when structuring a new domain's database layer so reads and writes stay independently reusable across UI, API, and job clients.

Docs

• docs/codebase-organization.md (GitHub · GitLab)

Code

• src/lib/server/db/ (GitHub · GitLab)

Proof

• /showcases/db/relational/mutability

Machine-readable record: databases-queries-mutations-split in mcp/patterns.registry.json.