ReadMeFeed / Community knowledge
Real questions. Useful conversations. Find the people who know your stack.
Ecto.Multi lets you chain inserts, updates, deletes, and custom functions into a single atomic transaction. Learn how to build a Multi, handle errors, use nested transactions, and avoid common pitfalls with clear code examples.
When a Grails controller or service returns success after a domain save yet the database shows no new or updated row, follow these checks to uncover silent validation, binding, or transaction issues.
Guide to decide when to use .call() for read‑only calls and .send() for state‑changing transactions in Web3.js, with a table of trade‑offs and a verification example.
Decide between Mongoose pre('remove') middleware and manual deletion logic for cascading deletes. Compare trade‑offs, constraints, and performance, then see a concrete implementation example.
Context Neo4j exposes two memory‑capability knobs: dbms.memory.transaction.max limits each transaction’s heap usage, while dbms.memory.transaction.total.max caps the cumulative heap of all concurrent transactions. When the total limit is exceeded, Neo4j aborts a transaction and rolls it back, but the Operations Manual does not specify which transaction is ch
The racket/sql transaction form begins a DB transaction, runs a thunk, and rolls back on any exception, but it does not intercept DDL statements that trigger an implicit commit in the underlying database. When a statement such as ALTER TABLE is executed inside the thunk, many engines (e.g., PostgreSQL, SQLite, MySQL) commit the transaction before the rollbac
Determine whether enabling the maxTransactionTime option in Vert.x 4.3.x causes the JDBC client to automatically roll back any transaction left open when a connection is returned to the pool after a database backup restore. Consider that the client defaults to auto‑commit mode, does not expose a hook for abandoned connections, and that maxTransactionTime onl
Transactional Migration Rollback in CodeIgniter 4 The goal is to guarantee that a failed migration leaves the database unchanged, even when the migration contains schema‑altering statements such as CREATE TABLE or ALTER TABLE. In MySQL, DDL commands cause an implicit commit that breaks the transaction wrapper CodeIgniter applies by default, so a rollback may
Goal: Determine whether Prisma Client’s $transaction callback provides full atomicity when an error is thrown after some writes have already succeeded within the same transaction scope. Constraints: The transaction API reuses a single connection for the callback, uses SAVEPOINTs for nested writes on supported databases, and automatically rolls back on any th
ecto
web3js
mongoose
neo4j
racket
vertx
codeigniter
prisma