MediaWiki:Backend-fail-batchsize/qqq

Error message when the limit of operations to be done at once in the file backend was reached. Parameters:
 * $1 - the number of operations attempted at once in this case
 * $2 - the maximum number of operations that can be attempted at once

A "backend" is a system or component that ordinary users don't interact with directly and don't need to know about, and that is responsible for a distinct task or service - for example, a storage back-end is a generic system for storing data which other applications can use. Possible alternatives for back-end are "system" or "service", or (depending on context and language) even leave it untranslated.