fetch_feed Performance Issue

The performance issue of fetching that amount of feeds from external sites is not related with WordPress at all, but it can be solved in WordPress easily.

  1. Set up a escheduled event that fecth the feeds, one by one could be better.
  2. Disable WP Cron for users and set it up to run using a server cron job.

This way, you fetch the feeds in the background and serve the data without blocking the user experience.

Related Posts:

  1. How to remove feeds from WordPress totally?
  2. Getting /feed/ behind post urls in Google Webmaster Tools; crawler errors? [closed]
  3. Disable comments feed, but not the others
  4. How to read the xml file in wordpress?
  5. Is it usual to have a non-Feedburner feed on a WordPress blog?
  6. Disable links in header (feeds and such)
  7. Troubleshooting fetch_feed and SimplePie
  8. How to exclude posts of a certain format from the feed
  9. Combining RSS Feeds and Sorting with fetch_feed
  10. wp_remote_get vs. fetch_feed ? which is the better for performance?
  11. how to publish a feed of posts with a certain custom field value?
  12. Combining multiple RSS feeds using fetch_feed
  13. Yoast custom feed template as add_feed function?
  14. Restrict certain posts from being sent to the feed subscribers
  15. How to display LinkedIn feed/company updates into WordPress site? [closed]
  16. Duplicate Posts using Feedwordpress
  17. Is there a way to have a dual WP feed (full/partial)?
  18. Custom WordPress Feeds operators?
  19. How to retrieve the list of all posts ever published via the feed?
  20. Update feed more frequently
  21. w3 total cache keeps minifying my feeds
  22. How to use is_feed() to target a category feed?
  23. Adding a featured image to atom feed
  24. Add custom profile info into Feed
  25. How to filter out an iframe from feed
  26. combine multiple feeds with fetch_feed and display blog titles for each item?
  27. RSS feed validity and Google Adsense
  28. Possible to get feed to return latest updated posts rather than latest published?
  29. Removing the FeedBurner redirect
  30. Options for authenticated feeds
  31. RSS feed for deleted posts and comments
  32. Server stressed by /feed
  33. How to get feed for pages?
  34. How can i realize a semi-private research diary blog
  35. WordPress feeds and publish date
  36. Editing feed for thumbnails and link
  37. feed appearing different in the three main browsers
  38. Fetch_Feed cURL error 28
  39. Using fetch_feed to retrieve items with non common titles
  40. How to output WordPress feed in a non-WordPress site?
  41. Change conditionally a variable value for different feeds
  42. Googlebot adding /feed at the end of my URLs
  43. Check if feed is fetched successfully
  44. How can I set my RSS feed time to update feed quicker
  45. Why is my comment feed broken?
  46. Require authorization for access to RSS feeds, but leave posts public
  47. after server upgrade, if I enable custom permalinks, my /feed stops working
  48. Using links (link_rss field) as the source for fetch_feed
  49. wordpress feed link change
  50. Why I don’t see all my post in feed in WordPress
  51. How can I force fetch_feed to return real URL?
  52. Default Wordress RSS Widget does not work on a subdomain site, works when I move it
  53. Expire Header for custom XML feed
  54. My RSS feed is not working
  55. How to remove feeds from WordPress totally?
  56. a lot of errors with feedwordpress
  57. Does the FD Feedburner plugin create feeds for categories
  58. fetch_feed function works on template index.php but not in plugin/wp-admin
  59. Conditional tag to show content in custom rss feed?
  60. Need correct results from 6 rss (fetch_feed)
  61. How can I rename the element to in my RSS?
  62. Password Protect a Podcast Feed?
  63. How to fetch all the movie details from IMDB
  64. Does it makes sense to have {post}/feed?
  65. Custom RSS causing timeout for website
  66. Add Custom Fields to Custom Post Type RSS
  67. Advantages and disadvantages of using automatic-feed-links
  68. Why does Simplepie return feed items in a wrong order?
  69. WordPress gallery ‘post_gallery’ filter doesn’t work with feeds?
  70. How to remove CPT comment feed from head?
  71. Scheduled event does not run at midnight
  72. WordPress Permalinks %postname% for RSS2 Feed URL
  73. Display the first image from a post in RSS feed
  74. Redirect feed to 404 page
  75. Why can’t I add this feed to the RSS widget?
  76. How can I get WP to build a feed based on multiple taxonomy terms
  77. How fetch_feed() works?
  78. Help needed to make my site as Aggregator
  79. Posts gathered from WPEMatico feeds are being mixed in different languages. Polylang is used for language separation
  80. What is best way to prevent access to Custom Post Types unless authenticated when the post type has an archive and is publicly queryable?
  81. How to customize feed?
  82. Custom rewrite to fetch feed data
  83. Creating separate feeds for custom post types
  84. Passing feed URLs with “&” to fetch_feed()?
  85. How to fetch custom post types with its full data on wordpress?
  86. How to generate feed for custom template
  87. Every time I try accessing a post it redirects me to the feed
  88. Remove all feeds and return custom 404 page
  89. Modify RSS feed to change iframe structure
  90. Use fetch_feed(); Totally Outside of WordPress?
  91. Dynamically Create Posts Via XML File
  92. Display child pages on homepage template
  93. wp_head hook content showing up at top of RSS feed
  94. How do I remove certain HTML elements with specific classes from the feed?
  95. How to import linked images and make them featured -> automagically
  96. How to get override the WP Admin Syndication feed limit for a custom feed?
  97. WordPress Plugins Feed Error, but I’m not asking for a plugins feed
  98. WordPress not showing the latest articles in RSS feed
  99. WordPress Feed Error [closed]
  100. “feed” added at the end of my URLs