Caching & Outputting RSS Data

I think you’re looking for the core function fetch_feed(), your new best friend!

From the Codex:

Retrieves an external feed and parses it. Uses the SimplePie and
FeedCache functionality for retrieval and parsing and automatic
caching.

and

fetch_feed caches results for 12 hours by default. You can modify this
by modifying the time interval via the filter
wp_feed_cache_transient_lifetime.

Related Posts:

  1. How to set the cache for the built-in SimplePie feed parser?
  2. Where does WordPress default SimplePie save cache data?
  3. Flush RSS Cache
  4. WordPress cache feeds
  5. Editing wp-includes/feed.php
  6. How to get SimplePie fetch_feed without stripping iframe code?
  7. Firefox is downloading the RSS feed
  8. Why does Simplepie return feed items in a wrong order?
  9. How to create additional full text RSS feeds
  10. Multiple category RSS feeds
  11. How to flush feed? Or set timeout on feed so that it isn’t cached?
  12. is it possible to get complete wordpress blog post in a rss feed?
  13. Disable RSS Feed
  14. Reducing image size in RSS only
  15. Changing title of wordpress RSS feed
  16. Setting the language of RSS feed
  17. A function to fetch blog content via rss feed
  18. Make RSS think posts are new?
  19. Creating an RSS feed with all of the prior month’s posts
  20. Difference between the 4 Built in RSS Feeds?
  21. Tracking RSS subscribers in Google Analytics
  22. How to disable atom feed and only use RSS feed
  23. RSS feeds and wordpress?
  24. How to get more than 25 items via Simplepie RSS Feeds?
  25. How to remove RSS feeds from WordPress theme
  26. How do I Import an RSS feed as WordPress posts without duplicates?
  27. How to remove site link from each post in RSS feed / modify output of the_excerpt_rss()?
  28. How to Create RSS Feeds for categories in WordPress?
  29. Importing multiple RSS feed into WordPress and sorting them by date
  30. Delaying One RSS Feed in WordPress but Not the Others?
  31. Custom RSS does not work for categories and tags
  32. Unfamiliar query string in Google Search Console URL not found
  33. Grab YouTube Thumbnail AFTER Post?
  34. Inserting ads into wordpress default rss feeds
  35. How fetch_feed() works?
  36. RSS feed for the previous week’s posts
  37. Feeds not working on my wordpress site
  38. Various WordPress Feeds for Same Blog
  39. How often does the RSS widget get updates?
  40. Help needed to make my site as Aggregator
  41. Out of memory errors – anon-rss or file-rss?
  42. Custom RSS feed with custom url
  43. WordPress – Sync wordpress post with JSON feed
  44. Feed links not working even with add_theme_support(‘automatic-feed-links’)
  45. How can I remove a RSS feed that a WordPress plugin adds to `wp_head()`?
  46. Is there way to make conditional branch for Rss feed items?
  47. Problem with getting RSS because of authentication
  48. Disable feed cache for custom RSS feed?
  49. Fetch / Filter Items in RSS feed by a different parameter.
  50. RSS Feed Sticky Post?
  51. How can I provide a plaintext RSS feed?
  52. How to add logo to rss feed
  53. Passing feed URLs with “&” to fetch_feed()?
  54. WordPress update totally broke the install. Main page now displays empty rss feed
  55. RSS: fetch_feed caching with different caching delay per feed?
  56. How to change wordpress RSS to be in a specific format?
  57. Rss error in first line of xml : not well-formed (invalid token)
  58. Second page of RSS feed
  59. Site Migration to WordPress: Handling Feeds
  60. How do I get my podcast feed created?
  61. get_item_quantity() Error When Fetching Feed
  62. Control time of addition of posts to RSS?
  63. RSS feed not Refreshes
  64. RSS Feeds not working in Chrome/ok in IE and Firefox
  65. Get RSS feed about plugin new update
  66. Issue with RSS Feed in Firefox and Safari
  67. Is a no RSS plugin setup supposed to work?
  68. WP Job Manager: adding Company and Location values to RSS feed
  69. What is the difference between these GUID’s in wordpress feed?
  70. Remove post content in RSS feed?
  71. RSS – This XML file does not appear to have any style information associated with it. The document tree is shown below
  72. Theme’s functions.php not called when rendering RSS feed
  73. Showing Taxonomy Terms in RSS Feed
  74. Modify RSS feed to change iframe structure
  75. Medium Rss feed is not parsing in wordpress
  76. RSS Feed has older items at the top
  77. RSS Feed cURL error 52?
  78. RSS Feed Shows NULL When Asking For Thumbnail
  79. Update postdata without creating duplicate on wp_insert_post from RSS feed
  80. How do I fix feed error?
  81. Category RSS Feed – Article Title not being detected
  82. Show only picture from post_content in custom RSS file
  83. Site requires login. How to publish login-free RSS feed?
  84. Error on Rss Feed for my blog
  85. My wordpress blog RSS isn’t showing
  86. RSS Feed to contain posts from 1 category only
  87. wp_head hook content showing up at top of RSS feed
  88. How to use RSS reader plugin for displaying as posts? [closed]
  89. How to debug/diagnose RSS feed that’s not working?
  90. RSS feed – get specific item from external feed
  91. Embedded Feed Update
  92. WP app getting confused about posts and pages
  93. How can I define the RSS feed content length?
  94. RSS Subscriber count
  95. How do I enable my WordPress website RSS feed? My site doesn’t seem to have an RSS feed
  96. WordPress Plugins Feed Error, but I’m not asking for a plugins feed
  97. WordPress not showing the latest articles in RSS feed
  98. Feed RSS problem on WordPress, need it for Google News
  99. WordPress Feed Error [closed]
  100. WordPress Dashboard Incoming Links Error