Caching what a query returned saves the round trip and leaves the hydration, the mapping and the aggregation to happen on every request anyway. Profiling usually shows the…
BLPOP is atomic and destructive, so a consumer that crashes between popping and finishing has lost the message with no record that it existed. The * generates an…
Options, tables, scheduled events, user meta and post meta all survive deactivation and deletion unless the plugin removes them explicitly, and most do not. The constant check is…
3.6 in April added wc_product_meta_lookup, a flat table of the attributes catalogue queries filter on — which is WooCommerce accepting that postmeta does not scale. The table is…
Destructuring copied values, so normalising an array in place still needed a temporary variable and a loop that reads worse than the operation it performs. The unset after…
A thousand cache entries written during a deploy with the same TTL expire in the same second, and the stampede recurs on a fixed interval forever. Deriving the…
8.x deprecates a set of assertions with names that were shortened years ago, and 9 removes them — so the warnings are a deadline rather than noise. The…