Prevent Duplicate Emails in FaunaDB Using a Unique Index
FaunaDB has no column-level unique constraint. Use a unique index to reject duplicate writes at the database layer, and handle the error in your application.
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faunadbImplementing Stable Cursor-Based Pagination in FaunaDB
Learn how to implement stable, high-performance cursor-based pagination in FaunaDB using indexes and the Paginate function to avoid duplicate records during data shifts.
Atomic Multi-Document Updates in FaunaDB Without Application Locks
FaunaDB runs each FQL query as a single atomic transaction with ACID guarantees across documents. Use that to enforce multi-document invariants without application locks, with index-driven reads and built-in temporal history.
FaunaDB Query Optimization: Index vs Filter Decision Guide
Use FaunaDB Indexes to restrict candidate sets before applying Filters, avoiding full collection scans and reducing read costs.
Ensuring Consistent Data in FaunaDB: How to Use Multi‑Document ACID Transactions with FQL
Want to guarantee that a user profile and its default settings are created together in FaunaDB? Learn how FaunaDB’s native multi‑document ACID transactions work, when to use them, and a step‑by‑step FQL example that keeps your data consistent without application‑level locks.
Diagnosing FaunaDB 403 Permission Denied Errors in Role-Based Access Control
A diagnostic guide for FaunaDB 403 permission denied errors, covering role membership, privileges, predicates, and user-defined function context.
Using FaunaDB TTL to Automatically Expire Documents
Learn how to enable FaunaDB’s TTL feature: set a ttl_field on a collection, store expiration as Unix microseconds, and let the background sweep delete documents automatically.
Enforcing Multi-Document ACID Invariants with Fauna FQL
Fauna executes an entire FQL expression as one ACID transaction, letting you enforce multi-document invariants like balance transfers directly in the query instead of application code.
FaunaDB Transactional Updates: Architecture Note for ACID‑Compliant Multi‑Document Writes
Learn the minimal FaunaDB design for atomic updates across documents, how RBAC defines data boundaries, what to monitor, and when to revisit the approach.