sqlite

@webda/sqlite

---

@webda/sqlite

Webda/SQLiteStore, Webda/SQLiteQueue and Webda/SQLitePubSub on Node's built-in node:sqlite (Node >= 22.13, no third-party dependency). Without a persistence block the database lives in memory and is lost on stop(), like MemoryStore; with persistence.path it is a single durable file.

Need	Pick
Throw-away data in tests, zero setup	MemoryStore / MemoryQueue
A durable single file, WebdaQL pushed to SQL, queue and pub/sub on the same file	@webda/sqlite
One JSON file per object you can read by hand	@webda/fs
Several hosts, heavy concurrent traffic	@webda/postgres

Modes

• Memory (no persistence): one database per service, or one shared by the services giving the same database.name (store + queue + pubsub in a test).
• File (persistence.path, relative to the application directory): WAL journal by default, synchronous NORMAL; every committed write is durable, so there is no delay and no flush on stop(). Services of one process on the same path share one connection; other processes open their own.
• Differences from MemoryStore.persistence: no delay; key, cipher and compressionLevel are refused at init() (node:sqlite has no encryption or compression), never silently ignored.

Caveats

• DatabaseSync is synchronous: every statement blocks the event loop. Fits development, tests, CLI tools and small single-node applications; use PostgreSQL for heavy concurrent traffic.
• SQLitePubSub is a message log read through cursors: delivery is at-most-once per subscriber while subscribed, a subscriber offline longer than retention misses messages (use SQLiteQueue for guaranteed delivery), and it works inside one host only (in-process wake-up, PRAGMA data_version polling for other processes).
• Node 22 prints an ExperimentalWarning the first time node:sqlite is loaded; Node 24 does not.

Configuration

{
  "services": {
    "sqlite": {
      "type": "Webda/SQLiteStore",
      "persistence": { "path": "./.webda/app.sqlite" },
      "models": ["MyApp/Post", "MyApp/Comment"],
      "tables": { "MyApp/Comment": "comments" }
    },
    "jobs": { "type": "Webda/SQLiteQueue", "persistence": { "path": "./.webda/app.sqlite" } },
    "events": { "type": "Webda/SQLitePubSub", "persistence": { "path": "./.webda/app.sqlite" } },
    // tests / dev: same services, in memory, sharing one database
    "testStore": { "type": "Webda/SQLiteStore", "database": { "name": "test" } }
  }
}