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Enhance WordPress Search Using Sphinx


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This presentation provide the details of what is the problem with WordPress Search and how Full-Text search on WordPress can be used using Sphinx

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Enhance WordPress Search Using Sphinx

  1. 1. Enhance WordPress Search using Sphinx
  2. 2. I’m Roshan Bhattarai • • • • • CTO @ Proshore Co-author – PHP AJAX COOKBOOK A Developer and learner Sometime I blog @ Twitter/Facebook/Linkedin @roshanbh
  3. 3. What’s the problem with search in WordPress
  4. 4. Problem with default WordPress Search • Default WordPress uses SQL like operator and % wildcard character to get search result • SQL’s Like operator doesn’t care much about the relevancy of the result • Like operation is too slow in large set of textual data • WordPress sort the search result by date
  5. 5. Ok let’s improve the WordPress Search
  6. 6. So what’s resolution ? • Use the MySQL Full-Text indexing and Search. • Use Full-Text search server
  7. 7. MySQL Full-Text search • • It improve the searching speed and result relevancy by using MATCH AGAINST than LIKE function • Use Full-Text index
  8. 8. Full-Text Search SQL Example Normal Like Search : WHERE (post_title LIKE '%morbi%') OR (post_content LIKE '%morbi%') Full-Text MySQL Search : WHERE MATCH (post_title,post_content) AGAINST (’morbi');
  9. 9. Pros and Cons MySQL Full-Text Indexing • Pros • Can be used in Shared hosting • No need to install extra search server • Cons • Still slow with very large data • Not featured rich like Search server
  10. 10. And a very good news
  11. 11. WordPress 3.7 has better search • Please upgrade your WordPress now. Relevancy is added in the search of WordPress 3.7 • Official Note from WordPress 3.7 release : Search results are now ordered by how well the search query matches a post, instead of ordered only by date. For example, when your search terms match a post title, that result will be pushed to the top.
  12. 12. Difference in Search SQL • Wordpress 3.6 WHERE ((wp_posts.post_title LIKE '%morbi%') OR (wp_posts.post_content LIKE '%morbi%')) ORDER BY wp_posts.post_date DESC • WordPress 3.7 WHERE ((wp_posts.post_title LIKE '%morbi%') OR (wp_posts.post_content LIKE '%morbi%')) ORDER BY wp_posts.post_title LIKE '%morbi%' DESC, wp_posts.post_date DESC
  13. 13. Still, It uses like operator of SQL
  14. 14. Why full text search engine • Provides more relevant result. • Uses a ranking algorithm to quantify how strongly a given record matches search keywords. • Fast indexing • Search is fast compared to default MySQL search and MyQL Full text indexing • Allow to use special operators like OR or NOT in search
  15. 15. Popular Full text search engines • Apache Solr ( ) • Elastic Search ( ) • Sphinx ( )
  16. 16. Why Sphinx ? • Easy to setup and use • Good documentation • Used by many big websites like Craiglist, Groupon, Metacafe etc • My personal choice
  17. 17. Server Requirement • Must have server with SSH access • VPS or Dedicated server is recommended
  18. 18. Installation of Sphinx For Mac ( using Homebrew) brew install sphinx –-mysql For Windows / Ubuntu / Debian / RHEL/CentOS
  19. 19. WordPress Plugin WordPress Sphinx Search Plugin
  20. 20. Two main components When installed sphinx, two application called indexer and searchd gets installed. • Indexer This component of Sphinx is used for indexing the data. • Searchd This is a search daemon which returns of the document id of matched search results.
  21. 21. Installation
  22. 22. Now setup Cron Job Note : Delta index is a small temporary index above main index.
  23. 23. The boring installaion is done ! YaY
  24. 24. To run indexer and searchd Manually • To run indexer manually /usr/local/sphinx/bin/indexer --rotate –config /<path of wordpress>/wpcontent/uploads/sphinx/sphinx.conf wp_delta wp_main wp_stats • To run searchd manually /usr/local/sphinx/bin/searchd --config /<pat of wordpress>/wp-content/uploads/sphinx/sphinx.conf
  25. 25. Now let’s look at the result of all the hard work
  26. 26. Normal WordPress search result
  27. 27. Search result after using Sphinx
  28. 28. Doh! This guy is done with his boring talk  Listening to next person is always boring. To make it exciting you’ve to do it yourself Thank you! Any Questions ?