The WordPress 7.0 release slipped, and I am glad it did. Project leadership pushed the launch back by several weeks to settle the architectural primitives behind real-time collaboration. Anyone who has watched a site fall over because of a race condition or an over-eager transient will know what that delay is buying: fewer ways for the editor to burn through server resources.
The cache invalidation mess
The argument that ran for weeks was about “awareness” data, meaning who is editing what at any given second. The first plan put content changes in postmeta and presence data in transients, as a way around constant cache invalidation. If you have run a high traffic WooCommerce site, you already know where that goes: transient writes hammering wp_options, a table that bloats fast and drags every query touching it.
Matt Mullenweg then said he would rather revisit the custom table proposal (Trac #64696). Pull that data out of the meta tables and into a dedicated structure, probably wp_collaboration, and the object cache stops getting purged every time somebody moves their cursor. That refactor should have been the baseline on day one.
The HTTP polling bottleneck
WordPress 7.0 syncs over HTTP polling. That keeps it working on the cheapest shared hosting, and it costs a lot more than WebSockets would, because the editor pings the server about once a second. From the host’s side, a read-heavy application turns into a write-heavy one. So the WordPress 7.0 release makes collaboration opt-in, which lets the ecosystem stress-test what all those database writes really do.
<?php
/**
* Example: How a senior dev might check for collaboration
* support before firing heavy custom syncing logic.
*/
function bbioon_check_collaboration_support() {
// Real-time collaboration is often disabled if legacy metaboxes are present
if ( ! function_exists( 'use_block_editor_for_post' ) ) {
return false;
}
// Checking if the environment is ready for Phase 3 primitives
return apply_filters( 'bbioon_enable_rtc_bridge', true );
}
The legacy metabox problem
If your plugins still rely on classic metaboxes, the WordPress 7.0 release will bite you. When WordPress detects a metabox, it switches real-time collaboration off. Metaboxes save through a full POST request, and that does not fit the granular, package-based syncing of the wordpress/data API that Gutenberg runs on. Our notes on WordPress 7.0 RC2 stability testing cover what to watch during the transition.
If the WordPress 7.0 release is eating your dev hours, hand it over. I have been building on WordPress since the 4.x days.
What to do with the extra weeks
This delay is debt paid before it accrues. A custom table plus a real cache invalidation strategy, shipped now, is worth years of “why is the database on fire” tickets later. If you write plugins, spend the extra weeks moving your UI onto modern Gutenberg APIs and dropping the metaboxes. The point of 7.0 is the primitives underneath the features, and primitives are the part nobody gets to change once they are in core.
