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Description
HTTP2采用二进制格式传输,取代了HTTP1.x的文本格式,二进制格式解析更高效。
多路复用代替了HTTP1.x的序列和阻塞机制,所有的相同域名请求都通过同一个TCP连接并发完成。在HTTP1.x中,并发多个请求需要多个TCP连接,浏览器为了控制资源会有6-8个TCP连接都限制。
HTTP2中
- 同域名下所有通信都在单个连接上完成,消除了因多个 TCP 连接而带来的延时和内存消耗。
- 单个连接上可以并行交错的请求和响应,之间互不干扰
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