v1 joined the project, service and index with underscores and v2 uses hyphens, which breaks every script that constructed a container name by hand. The compatibility flag –compatibility…
A Redis stream consumer group tracks messages delivered and not acknowledged, and that list is where a crashed consumer’s work sits. A pending count that grows without bound…
JSX compiled to React.createElement required React to be in scope; the new transform imports what it needs itself. The output is marginally smaller and the ceremony disappears, and…
An ETag costs nothing to emit and saves the response body only if clients actually send the conditional header back. The write side is where ETag earns its…
The nullsafe operator turns a fatal error into a null, which is sometimes exactly right and sometimes the removal of the only signal that something upstream was wrong.…
An exact key miss with no restore keys means starting from nothing, which for a node_modules cache is the difference between four seconds and ninety. The restore key…
A generator can be iterated once, and the second foreach over the same instance throws rather than returning nothing. Returning a generator from a method is therefore a…