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Mert Özen's blog posts on software development, backend, frontend, and DevOps.

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2 posts found #server-sent-events

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Backend PART 03

Server-Sent Events in Depth: TypedResults.ServerSentEvents, Resuming with Last-Event-ID and Proxy Pitfalls

To make up for missed SSE events, give every event an EventId, resend everything after the Last-Event-ID header and send a heartbeat as soon as the client connects. SseItem<T>, retry, CancellationToken, the Nginx gzip and timeout traps, HTTP/1.1's 6-connection limit, wrapping EventSource in an Observable in Angular, and reading with fetch when you need headers.

8 Nov 2026 14 min 4

Backend PART 01

Real-time Options: Polling, Long Polling, Server-Sent Events, WebSocket and SignalR — Which One When?

Use SSE for one-way notifications, WebSocket or SignalR for two-way low latency, and polling for rarely changing data. We build the same order status feature five ways and measure latency, request count and memory per connection; plus a decision table, where WebTransport stands, and why not everything should be real-time.

8 Nov 2026 11 min 4