Feed cache fallback – A feed could not be found

Sounds like you are looking at it from a very low layer POV. fetch_feed provides caching so you will not need to wait for a response on possibly every page load. Therefor, as long as there is a cache you are unlikely to even want a message to be sent and obviously you are not handling any actual result. It is unlikely that you will want to hurt your server with a faster refresh rate just to be able to properly detect the conditions on the other side.

What you should do is to handle the situation of not getting a reply, which is probably equal to empty feed, to supply the defaults you want.

Related Posts:

  1. How do I fetch feed info from cache instead of directly from feed?
  2. How to use cache with simplepie
  3. How to set the cache for the built-in SimplePie feed parser?
  4. Where does WordPress default SimplePie save cache data?
  5. Cache a number of responses from external json feeds?
  6. W3 total cache – cache refresh programmatically [closed]
  7. Should I use Transient API to store HTML String, or Object?
  8. Caching: APC vs APCu vs OPcache
  9. Prevent WordPress from sending Cache-control http header
  10. Optimize apache for WP use
  11. Does a query executed through wpdb class get cached?
  12. Caching: Force fresh content for logged-in users (potentially by adding a query variable to the URL)
  13. Multiple WordPress sites eat up alot of RAM
  14. What exactly is an advanced object cache?
  15. Using a wildcard with delete_transient()
  16. Why does Simplepie return feed items in a wrong order?
  17. How to purge all transient caches?
  18. Troubleshooting fetch_feed and SimplePie
  19. Writing a cache manifest file for a WordPress blog (app cache, offline web applications)
  20. How to force content refresh of a page that has been loaded previously by the user? [closed]
  21. Help Pinpointing Source of Caching Issue
  22. Want to enforce the visitor to load the new version of your stylesheets and scripts [closed]
  23. Can someone explain WordPress caching, and what’s the best in my scenario?
  24. Transient / object cache maximum key length [duplicate]
  25. APC object caching in combination Batcache/memcached page caching?
  26. WordPress caching in development
  27. How to get more than 25 items via Simplepie RSS Feeds?
  28. What is difference between ‘Page Cache’ and ‘Object Cache’ in WordPress?
  29. W3 total Cache – Site with query strings
  30. Programmatically insert hierarchical terms & set terms for post causes glitch? [duplicate]
  31. Getting soft 404 errors (200 status) when caching plugins are enabled
  32. How to totally disable cache in WordPress?
  33. How to purge all transient caches?
  34. W3 Total Cache plugin integration
  35. Execute a piece of code also when the cached version of a page is served
  36. Method to make definitively static an abandoned WP blog
  37. pass-protected pages and posts not protected after enter them 1 time
  38. Can a WordPress blog be entirely hosted on a CDN if cached?
  39. Static HTML page caching for large website [closed]
  40. To have WordPress interact with memcached it must be installed as a PHP extension?
  41. WordPress caching issue
  42. WP Super Cache Bug with Ubermenu
  43. Problem with caching, W3TC [closed]
  44. How to find time last viewed?
  45. WP Rocket Cache Lifespan – Never clear cache? [closed]
  46. Disable feed cache for custom RSS feed?
  47. How do I enable dynamic content in a theme cached with WP Super Cache?
  48. How to cache a different page version based on HTTP header?
  49. How to store or cache custom shopping cart data for every user’s session
  50. Server stressed by /feed
  51. Live website is not showing the changes I’ve made [closed]
  52. Hook an action when a transient is deleted ? Can’t get it to work!
  53. WebHostingBuzz cache statement
  54. W3 Total Cache can’t create files [closed]
  55. Files cached as CSS or PHP?
  56. A bunch of unrelated wordpress using same memcached don’t store correctly their datas
  57. Passing feed URLs with “&” to fetch_feed()?
  58. RSS: fetch_feed caching with different caching delay per feed?
  59. How to be sure to get last page version without ANY cache?
  60. Is there a limit to size of data stored in update_option()?
  61. Last-Modified header support doesn’t speed up server processing – want more
  62. HIgh CPU usage – Will using cache plugins help
  63. Browser cache for dynamic content (list of tags)
  64. How to specify expiration of cacheable resources? [closed]
  65. APC fragmention woes on Apache AWS EC2 Small instance with WordPress and W3TC [closed]
  66. w3 total cache – Object Caching 2165/2469 objects? [closed]
  67. Website working fine when logged in but not working fine when we logged out
  68. Get user name and caching system
  69. Changing WP Object Caching during runtime
  70. Best practices for the cache of a static WordPress site, including CDN Cache and Cache Plugin
  71. Site’s first loading on a new browser with no cache is messed up
  72. Site speed slows when user logged in
  73. What do I do if my WordPress site is suddenly sanitizing portions of URLs it shouldn’t?
  74. WordPress mobile version is not responsive anymore after installing varnish
  75. Admin area is caching posts in the editor
  76. Having issues fixing site speed
  77. Is there a way to cache WordPress that does not loads core?
  78. Need to refresh page after each change
  79. leverage browser caching in wordpress
  80. WordPress varnish pages printed twice
  81. WordPress Userroles button getting cached
  82. custom php file inside my custom folder of plugins directory is not caching
  83. How to let users clear their posts cache with WP Super Cache?
  84. Having 4000 posts, my site is so slow
  85. Super cache caches mobile pages for desktop
  86. Should I use transients for these API call results?
  87. cache reset button and question about deleting cache
  88. Cleared wp-cache and file is still not updated [closed]
  89. Bluehost WebHost and performance problems with W3TC [closed]
  90. W3 Total Cache Minification: way to revert back? [closed]
  91. get_theme_mod returning cached values regardless of apache restart
  92. Caching with dynamic content
  93. After Migration, Warning: include_once() errors on all pages
  94. WordPress Plugins Feed Error, but I’m not asking for a plugins feed
  95. Levels of caching and impact on the WordPress web site
  96. Editing wp-includes/feed.php
  97. CSS changes not taking effect [closed]
  98. Experiencing a weird caching issues without any caching plugins
  99. How I define max cache time to Google Fonts installed on my site
  100. Keeping Objects in Memory