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Learn how to diagnose and fix Socket.io connection issues where clients stay stuck in HTTP polling mode instead of upgrading to WebSockets, including proxy configurations and CORS fixes.
Learn how to choose between Contract.events and eth.subscribe in Web3.js to build real-time dApps that are resource-efficient and resilient to connection drops.
A guide to fixing Mattermost WebSocket failures and 502 errors caused by misconfigured reverse proxies and timeout settings.
When Vaadin Flow is configured with pushMode=AUTO , the framework attempts a WebSocket connection before falling back to long polling if the handshake fails. In environments behind strict proxies or utilizing self-signed certificates, the WebSocket handshake may time out silently without triggering an explicit client-side error in the browser console. While
Angular Integration with High-Frequency WebSocket Streams Integrating a high-frequency WebSocket data stream into an Angular application requires balancing UI responsiveness with CPU overhead. By default, Zone.js intercepts asynchronous events, triggering a global change detection cycle for every incoming message, which can lead to significant performance de
Integration Boundary: Vite Dev Server and Browser Client Vite utilizes a WebSocket connection to facilitate Hot Module Replacement (HMR), allowing the server to push module invalidation events to the browser client based on the internal module graph. When a file is modified, Vite determines the minimum set of affected modules to update via the import.meta.ho
Background Canva’s client‑side cache stores images, fonts, and templates in the browser, pulling assets from a CDN that applies a one‑hour TTL and Cache‑Control headers. When a collaborator edits a shared element, a real‑time WebSocket event is emitted, but the event does not always trigger a cache‑busting query for the updated asset. Unresolved Decision The
When using web3.eth.Contract.subscribe with a filter object, the library relies on the underlying WebSocket connection. While filters successfully offload event matching to the node to reduce noise, a significant functional gap exists when the provider disconnects and reconnects. Once the connection is re-established, the subscription is typically reactivate
Goal: Achieve zero‑downtime migration of a small NestJS 9 application that uses the Express adapter and @nestjs/websockets by enabling graceful shutdown hooks so that in‑flight HTTP requests finish before the process exits. Uncertainty: While app.enableShutdownHooks() guarantees that HTTP handlers complete, it is unclear whether the same mechanism reliably t
nginx
web3js
vaadin
angular
vitejs
canva
nestjs