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On FPU-less Cortex-M0/M0+ cores, soft-float can dominate a control loop. This post explains when Q15 fixed-point helps, how to handle Q30 intermediates and saturation, and a verifiable decision rule.
KaratLabs’ real‑time whiteboard keeps interviewers and candidates in sync with WebSockets, Redis pub/sub, and a simple last‑write‑wins conflict strategy. Learn how the architecture works, test it, and avoid common pitfalls.
Learn how gRPC bidirectional streaming lets clients and servers exchange messages over a single HTTP/2 connection, with a concrete chat‑service example, trade‑offs, and verification steps.
Learn how to use Socket.IO rooms for targeted broadcasting and acknowledgements to guarantee message delivery to specific clients, with a step‑by‑step example and practical trade‑offs for scaling.
Learn when to choose Socket.IO rooms over namespaces for dynamic, low‑overhead scoped broadcasting, with a ready‑to‑run example and verification steps.
Load testing real-time applications requires WebSocket support. Gatling's built-in WebSocket simulation handles bidirectional communication for chat apps, live dashboards, and collaborative tools with memory-efficient non-blocking I/O.
Meteor’s live queries push server‑side MongoDB changes to clients via DDP, enabling UI updates. This guide walks through the replica‑set requirement, a Posts example, and trade‑offs like bandwidth and security. Verify with Meteor.status() and keep cursors lean for performance.
SurrealDB’s native SUBSCRIBE command lets you push real‑time updates over WebSockets. Learn how to set up a filtered subscription, the trade‑offs involved, and a practical example that powers live dashboards.
Learn how Socket.IO namespaces let you separate admin and user traffic on a single server, with a concrete example, trade‑offs, and verification steps.
karatelabs
grpc
socketio
nodejs
surrealdb