Stop Defaulting to WebSockets: A Practical Guide to SSE, Polling, and Knowing When You Actually Need Them
The article argues against defaulting to WebSockets for real-time features, advocating instead for simpler alternatives like Server-Sent Events (SSE) and polling when appropriate. It provides a decision framework based on whether the client needs to send data back to the server, with SSE and polling suitable for one-way updates. Practical code examples in JavaScript illustrate implementation for each approach.
- ▪WebSockets are often overkill for one-way real-time updates like notifications or progress bars.
- ▪Server-Sent Events (SSE) enable server-to-client push without the complexity of WebSockets and include built-in reconnection.
- ▪Polling remains a valid, simple, and widely compatible option for infrequent or low-concurrency updates.
Opening excerpt (first ~120 words) tap to expand
try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 1038036) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } AttractivePenguin Posted on Apr 28 Stop Defaulting to WebSockets: A Practical Guide to SSE, Polling, and Knowing When You Actually Need Them #tutorial #javascript #webdev #node Architecture Decisions (4 Part Series) 1 Stop Defaulting to WebSockets: A Practical Guide to SSE, Polling, and Knowing When You Actually Need Them 2 Core Web Vitals in 2026: The Practical Fixes for INP, LCP, and CLS That Actually Work 3 Idempotency Keys in Production: The Race Conditions, Expiration Traps,…
Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV Community.
Discussion
0 commentsMore from DEV Community
