Head-Of-Line Blocking

Head-of-line blocking (HOL blocking) in computer networking is a performance-limiting phenomenon that occurs when a line of packets is held-up by the first packet, for example in input buffered network switches, out-of-order delivery, and multiple requests in HTTP pipelining.
Posts about Head-Of-Line Blocking
  • HTTP/2: A Fast, Secure Bedrock for the Future of SEO

    …, the "horse" was the bottleneck. HTTP/1.1 was very much a product of those times. For example, when web browser loads a web page using HTTP/1.1 it can requests resource (like an image, JavaScript file, etc) one at a time, per connection to the server. It looks like this: You'll notice the browser is spending a long time waiting on each request. While…

    Moz Blogin SEO- 12 readers -
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