Mongster

Mongster wraps MongoDB transactions with automatic commit and rollback handling. The recommended flow is to use transaction-scoped models through ctx.use(Model).

[!IMPORTANT] Transactions require a replica set or compatible sharded deployment.

Recommended: `ctx.use(Model)`

import {  } from "mongster";
import { ,  } from "./models";

await .(async () => {
  const  = .();
  const  = .();

  const  = await .({ : "alice@example.com" });
  if (!) throw new ("Missing source account");

  await .({ : . }, { : { : -50 } });

  await .({
    : .,
    : 50,
    : "debit",
  });
});

Manual session management

import {  } from "mongster";

const  = await .();

try {
  await .(async () => {
    // pass { session } into model calls here when you want full manual control
  });
} finally {
  await .();
}

When to use which style

Use mongster.transaction() for most application code.
Use manual sessions when you need lower-level orchestration around the MongoDB driver.
Keep all related writes inside the same callback so the transaction boundary stays obvious.

Transactions

Recommended: ctx.use(Model)

Manual session management

When to use which style

On this page

Recommended: `ctx.use(Model)`