Posted July 19, 2025 by Achtung
#IDBRequestQueue #IndexedDB #Request Queuing #Race‑Condition Prevention #Data Persistence Reliability
Today I’m shipping a major behind‑the‑scenes improvement: IDBRequestQueue, a lightweight, event‑driven queuing system for all my IndexedDB operations. This new layer makes saving data rock‑solid, eliminating subtle race conditions and ensuring that every action on the website persists in the database exactly as intended.
Centralized Request Queue
I’ve introduced an IDBRequestQueue
class that wraps all IndexedDB requests. Rather than firing off multiple reads/writes in parallel, each operation is enqueued and processed one at a time. This guarantees that:
Writes never step on each other
Reads always reflect the most up‑to‑date state
Error handling and retry logic behave predictably
Event‑Driven Handler
A new event listener now intercepts every IndexedDB request, pushes it into the queue, and emits success or failure events when the operation completes. You can subscribe to these events to:
Trigger UI updates only after data is safely written
Capture analytics on DB latency or failures
Implement custom retry policies or back‑off strategies
Improved Reliability & Maintainability
By funneling all database interactions through a single queue, I’ve greatly reduced the risk of:
Overwriting newer data with stale writes
Unhandled promise rejections from simultaneous requests
Subtle bugs that only surface under heavy load or on slower devices
With this update, you’ll experience far fewer “ghost” save errors, and I’ll spend less time chasing down concurrency bugs. Whether your app triggers dozens of DB writes in quick succession or just runs quietly in the background, IDBRequestQueue
makes persistence predictable, fast, and bullet‑proof.