Facebooks BigPipe Done in Java

BigPipe is a way of thinking for web pages. It introduces the concept of pagelets, small parts of the website. BigPipe was implemented at Facebook:

BigPipe is a fundamental redesign of the dynamic web page serving system. The general idea is to decompose web pages into small chunks called pagelets, and pipeline them through several execution stages inside web servers and browsers. This is similar to the pipelining performed by most modern microprocessors: multiple instructions are pipelined through different execution units of the processor to achieve the best performance.

BigPipe renders the structure of a webpage and then adds the content via JavaScript, a kind of inlined AJAX. The result is that users see content earlier and progressivly. Just reload a Facebook page and see how different parts are loaded. This reduces latency and especially changes the perception of users: They think the website is faster. A side effect of splitting the page into pagelets is how each pagelet can be rendered in parallel with asynchronous IO on the server or with an IO thread pool.

With threads, message piping or a worker model very long running service calls do not stop the page from loading, it will only prevent showing the pagelet that is slow. Each thread can have a timeout and you can kill long running or blocking service calls – a SLA for page calls.

Sam Pullaras mustache.java follows the same principles, breaking rendering into parts each with it’s own thread to reduce latency.

I’ve implemented a proof of concept of BigPipe in Java (should run as-is in every servlet container):

This will result in the following HTML code – see how content2 is rendered before content1. Due to threads the order in which content arrives is non-deterministic.

Some problems I’ve encountered:

  • You need the correct content type, content encoding and doc versiom, otherwise the page will not render progressivly
  • Your framework needs to enable flushing the output at certain points, so content is pushed to the browser

I would like to have some framework support and I’m taking a look into how to do this in Play.

168 thoughts on “Facebooks BigPipe Done in Java”

  1. Pingback: human hair
  2. Pingback: hoverboard
  3. Pingback: nike roshe run td
  4. Pingback: nike huarache 1992
  5. Pingback: parajumpers jakke
  6. Pingback: parajumpers norge
  7. Pingback: コピー時計
  8. Pingback: roger vivier shoes
  9. Pingback: roger vivier sale
  10. Pingback: louis vuitton salg
  11. Pingback: parajumpers salg
  12. Pingback: www.710.com
  13. Pingback: DtSPjeIx
  14. Pingback: electric scooter
  15. Pingback: nike air max elite
  16. Pingback: タンク 列車
  17. Pingback: doubles バッグ
  18. Pingback: duvetica通販
  19. Pingback: バッグ 付録
  20. Pingback: coins fifa
  21. Pingback: fut coin websites
  22. Pingback: chrismd fifa coins
  23. Pingback: fifa 13 coins
  24. Pingback: nike outlet
  25. Pingback: アグ 金沢
  26. Pingback: air max shoes
  27. Pingback: FENDI ?? ??
  28. Pingback: nike air pas cher
  29. Pingback: cs go sale
  30. Pingback: cs go aug skins
  31. Pingback: cs go deagle skins
  32. Pingback: csgo trades
  33. Pingback: cheap cosmetics
  34. Pingback: cheap csgo keys
  35. Pingback: cheap csgo key
  36. Pingback: athletic shoes
  37. Pingback: csgo ninja defuse
  38. Pingback: elo history csgo
  39. Pingback: nike pas cher
  40. Pingback: fuck google
  41. Pingback: fuck google

Comments are closed.