How to run wp_insert_post() & wpdb on the background?

page load is not affected […] and the //METADATA is echoed/displayed immediately?

With your current setup, that is not possible. In order to display immediately, you need the data. To get the data, you need to wait.

Possible solutions are:

  1. Fetch the data before (e.g. via Cron) and populate the DB with the info. -> No need to fetch it live, but you might not know, which ids to get and which not to.

  2. Fetch the data asynchronous (e.g. via calling a REST endpoint in the template). -> Page will load fast, but parts are missing and rendered later. No need to pre-fetch the data though.

Related Posts:

  1. Change post status based on meta value
  2. using $wpdb to insert a form into a post
  3. Programmatically Creating Page using $wpdb and getting 404 error
  4. How to protect a script execution on WordPress?
  5. $wpdb->insert() doesnt work anymore
  6. duplicate entries in database while using save_post or wp_insert_post
  7. adding a log row log table, when the draft post publish
  8. $wpdb->get_row() only returns a single row?
  9. Running WP Cron on multisite the right way
  10. what is the way to see the currently executing query in wordpress?
  11. WordPress cron isn’t scheduled on amazon web services
  12. Schedule WordPress Auto-Updates to only run during business hours
  13. $wpdb->last_error doesn’t show the query on error
  14. Delete/replace img tags in post content for auto published posts [closed]
  15. Automated mark posts as featured every day
  16. What does wp_update_post() do that the $wpdb class does not?
  17. WordPress cron running twice
  18. How ( and mostly at what time ) can i prevent the alternate cron from running?
  19. wpdb-> not adding prefix to custom table
  20. Get random row from custom table
  21. store custom WP table names in a global variable
  22. How to save html and text in the database?
  23. XOR functionality for meta_query
  24. Why is wp-cron only executing on page visit?
  25. How can I migrate mysql_fetch_array to $wbpdb?
  26. Foreach loop using $wpdb not results from rows
  27. Cron schedule not updating after run
  28. Return XML of Post Metadata
  29. export a csv file from the database with a cronjob
  30. wp_schedule_single_event not working: cron job is triggered but nothing gets executed
  31. WP All Import manual Cron
  32. wp-cron behaviour when there are multiple queued tasks
  33. Set post to unpublished after one week depending on condition
  34. Problem in inserting row to custom database table
  35. WP cron doesn’t pass through my arguments
  36. sanitize_text_field and apostrophe problem
  37. $wpdb->prepare with ON DUPLICATE KEY UPDATE
  38. Code only works every other time its run
  39. wpdb updating record in wordpress with json adds extra array elements
  40. How to display a specific category using a custom Query?
  41. Can’t pass variable in wordpress wpdb->get_results
  42. How to force ‘cron_schedules’ every minute instead 1 hour?
  43. AWS Bitnami WordPress – SELECT command denied to user
  44. WPDB Placeholders and second argument for prepared statements
  45. PHP Fatal Error – $wpdb a non-object?
  46. How to use wp cron job to run a function
  47. How do I count columns on a custom WPDB query?
  48. Trouble inserting string containing quotations marks with wpdb in save_post hook
  49. A unique wp_schedule_single_event() for each post?
  50. get_results query with accent
  51. Is querying wpdb directly and skipping actions provided by WP’s core “wp_update_post” a good idea?
  52. wpdb query not working
  53. Where can I see MySQL hostname and port for wp-config.php
  54. WordPress wpdb->insert returns int(0) => doesn’t insert anything, no errors!
  55. Using “->” in a page to exceute $wpdb query gives error
  56. Display a random tag but using cron to control frequency of change
  57. $wpdb->get_results not returning an array
  58. Insert two row in wordpress database
  59. Get all sticky posts from one user through user ID
  60. WPDB Query Question with Category Only
  61. wpdb result arrray inside an array
  62. $wpdb->num_rows doesn’t work
  63. How can I change my meta_query to SQL wpdb query?
  64. What causes wp_schedule_single_event to fire off?
  65. Can/should we delete wordpress cron jobs with no action?
  66. How capturate wpdb exceptions?
  67. Activate Plugin Automatically After Set Time
  68. Limit left join
  69. Flush rewrite rules with scheduled event (cron)
  70. Get records from Formidable Table using $wpdb->get_col
  71. Prepare WPDB with meta key and meta value
  72. Cron not sending wp-mail()
  73. WP_CRON issue with UTC and local time
  74. Plugin with functions inside a class & how to trigger WP CRON
  75. wont add form details to database or send me mail
  76. WordPress crob job performance
  77. Call to a member function insert()
  78. WordPress: Cron locking and Queue
  79. Missing argument 2 for wpdb::prepare() [duplicate]
  80. wpdb->update update the entire table instead of one row
  81. Wrote a WP Cron Plugin and it triggers a fatal error upon activation
  82. WPDP related functions look to work but they don’t
  83. Huge cron option_value into wp_options table
  84. Save customizer default values to DB on theme activation
  85. Plugin with connection to database – Single function
  86. Alter the main search query to search posts by coauthor user name
  87. Protect custom form from SQL injection
  88. why nl2br() is adding an extra ?
  89. How to add more custom fields in user meta table simultaneously
  90. wpdb->update error
  91. get unserialized array without using get_option()
  92. Create Table Failed Column Date DateType
  93. Using $wpdb to update current post
  94. DBDelta: “table doesn’t exist” for a table that was just created
  95. query using wpdb in wordpress gets me no result
  96. How to know if WP cron is currently running my hook?
  97. query_vars doesn’t return query string (trying to get data from $wpdb)
  98. Custom cronjob not executing at all, but manually
  99. ‘wp_site_health_scheduled_check’ Causes Failure Of Other Scripts
  100. $wpdb->prepare UPDATE process not work in functions.php