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Sanyou's Java Diary
Sanyou's Java Diary
Jul 28, 2025 · Backend Development

Pick the Right Real‑Time Communication: Short Polling, Long Polling, WebSocket, SSE

This article compares four real‑time communication techniques—short polling, long polling, WebSocket, and Server‑Sent Events—detailing their protocols, advantages, disadvantages, latency, resource consumption, and typical use cases, and provides guidance on selecting the most suitable method for different application requirements.

Backend DevelopmentSSElong polling
0 likes · 6 min read
Pick the Right Real‑Time Communication: Short Polling, Long Polling, WebSocket, SSE
Su San Talks Tech
Su San Talks Tech
Apr 25, 2025 · Backend Development

Which Real‑Time Communication Method Is Right for Your App? Short Polling, Long Polling, WebSocket, or SSE

This article compares four real‑time communication techniques—short polling, long polling, WebSocket, and Server‑Sent Events—detailing their advantages, drawbacks, latency, resource consumption, and ideal use cases to help developers choose the most suitable solution for their applications.

Backend DevelopmentSSElong polling
0 likes · 7 min read
Which Real‑Time Communication Method Is Right for Your App? Short Polling, Long Polling, WebSocket, or SSE
Top Architect
Top Architect
Mar 4, 2023 · Backend Development

Design and Optimization of a High‑Performance Live‑Streaming Danmaku System

This article details the challenges and solutions for building a scalable, low‑latency danmaku service for live streaming, covering background requirements, bandwidth constraints, protocol choices, short‑polling implementation, reliability measures, and performance results that supported 700,000 concurrent users during a major event.

bandwidth optimizationdanmakulive streaming
0 likes · 10 min read
Design and Optimization of a High‑Performance Live‑Streaming Danmaku System
Architecture Digest
Architecture Digest
Jan 18, 2023 · Backend Development

Design and Optimization of a High‑Throughput Live‑Streaming Danmaku System

This article describes the challenges of delivering real‑time danmaku for a Southeast Asian live‑streaming service, analyzes bandwidth pressure, network instability, and reliability issues, and presents a series of backend optimizations—including HTTP compression, response simplification, short‑polling, service splitting, caching, and a custom ring‑buffer—to reliably support up to one million concurrent users.

bandwidth optimizationdanmakulive streaming
0 likes · 12 min read
Design and Optimization of a High‑Throughput Live‑Streaming Danmaku System
Java High-Performance Architecture
Java High-Performance Architecture
Jan 8, 2023 · Backend Development

Building a Million‑User Live‑Stream Danmaku System with Short‑Polling

To support Southeast Asian live streaming with up to a million concurrent users per room, we replaced Tencent Cloud’s inadequate danmaku service with a custom solution that optimizes bandwidth via HTTP compression, response simplification, ordering, frequency control, and a short‑polling delivery mechanism, while ensuring reliability through service splitting, caching, and lock‑free ring buffers.

BackendScalabilitydanmaku
0 likes · 12 min read
Building a Million‑User Live‑Stream Danmaku System with Short‑Polling
Architecture Digest
Architecture Digest
Jan 6, 2023 · Backend Development

Design and Optimization of a High‑Performance Danmu System for Southeast Asian Live Streaming

This article presents a detailed case study of designing a high‑throughput danmu (bullet‑screen) system for Southeast Asian live streaming, analyzing bandwidth constraints, latency issues, and evaluating long‑polling, WebSocket, and short‑polling approaches, ultimately describing the chosen short‑polling solution, service partitioning, caching, and ring‑buffer techniques to achieve stable performance for millions of concurrent users.

WebSocketbandwidth optimizationlong polling
0 likes · 12 min read
Design and Optimization of a High‑Performance Danmu System for Southeast Asian Live Streaming
vivo Internet Technology
vivo Internet Technology
May 19, 2021 · Backend Development

Design and Evolution of Vivo Live‑Streaming IM Message System

Vivo’s live‑streaming IM system combines short‑polling and long‑connection techniques, Redis SortedSet storage, priority‑based routing, protobuf compression, and discard strategies to deliver a fault‑tolerant, high‑concurrency messaging backbone that scales with growing traffic and diverse message types.

Backend ArchitectureInstant Messaginglive streaming
0 likes · 20 min read
Design and Evolution of Vivo Live‑Streaming IM Message System