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8 lines
633 B
Markdown
8 lines
633 B
Markdown
# Active Server
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There is a single Active server in the group. This server was the first to obtain the exclusive lock for storage. For the `FileStore` implementation, it means trying to get an advisory lock for a file located in the shared datastore. For the `SQLStore` implementation, a special table is used in which the owner of the lock updates a column. Other instances will steal the lock if the column is not updated for a certain amount of time.
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If the elected server fails to grab this lock because it is already locked, it will go back to standby.
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***Only the active server accesses the store and service all clients.***
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