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TCP, HTTP and SPDY Deep Dive
Rating: 4.3 out of 5(1,391 ratings)
66,792 students

TCP, HTTP and SPDY Deep Dive

The dirty networking secrets web programmers never think about when designing their applications.
Created byIvan Pepelnjak
Last updated 4/2013
English

What you'll learn

  • By the end of the course, you'll be able to optimize your web server and your web application to reduce the impact of TCP and HTTP on your web application response times.

Course content

3 sections • 6 lectures • 1h 21m total length

  • The Problem and why do we care12:04

    In the ideal world, you’d get a new web page within 100 milliseconds of clicking an active web page component (link, button ...). Reality is way harsher – sometimes it takes seconds till you can enjoy a web page served from a well-behaved web server (let’s pretend there are no server performance issues).

    In this lecture you'll learn how the network transport mechanisms (TCP and HTTP) impact web application performance and what you can do to improve it.

  • TCP and HTTP deep dive13:11

    This lecture is a deep dive into actual TCP and HTTP mechanisms that increase end-to-end latency (TCP 3-way handshake, initial congestion window, request/response nature of HTTP).

  • TCP and HTTP deep dive - Q&A9:18

    The TCP and HTTP deep dive lecture triggered numerous questions during the live webinar session – it took me almost 10 minutes to answer them all.

Requirements

  • Basic familiarity with Internet technologies, including IP, TCP and DNS.

Description

This course will tell you how TCP and HTTP (the transport and presentation-layer protocols used by web-based applications) impact the web application responsiveness and page load time.

We'll look at waterfall diagrams created by web browser development tools, cover the intricate details of TCP and HTTP (including slow start, congestion windows and pipelining), and try to figure out whether SPDY (the next-generation HTTP from Google) makes sense.

The course is delivered via short video lectures in which I gradually expose the problems your web browser faces when trying to fetch all components of a web site, and the solutions you could use to make the process faster.

You can take your time and go at your own pace, or rush through the course and be done in an hour or two. However, I would encourage you to proceed slowly, build your own test environment (using your mobile device or WAN emulator like WANem) and explore what's going on behind the scenes with browser development tools and Wireshark.

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Who this course is for:

  • Advanced web application developers looking to squeeze the last drops of performance from their application.
  • Network engineers trying to understand the impact of the network on the application workload.

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