Streaming LLM Responses End to End: SSE, Backpressure, and Mid-Generation Cancellation
TL;DR Streaming LLM responses via Server-Sent Events (SSE) cuts perceived time to first token (TTFT) from seconds to milliseconds while maintaining a lightweight, unidirectional HTTP connection. Without active backpressure management, slow downstream clients trigger memory bloat in intermediate proxies as fast token emitters overwhelm TCP socket buffers. Mid-generation cancellation requires…
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