What Is Read Lock at Declan Gleadow blog

What Is Read Lock. Multiple read locks can be acquired by multiple threads at the same time. When a thread has a read lock on a row/table, no thread. The read lock may be held simultaneously by multiple reader threads, so long as there are no writers. Operators use a lock hierarchy to declare intent to read or update data at higher level (page or table level, ignoring partition level options). Spinlocks don't differentiate between read and read/write access. A read lock is a shared lock, multiple readers can held a read lock simultaneously. A read lock conflicts when. Thus spinlocks do not exploit this potential parallelism. However, if a transaction demands a write query on item x, then that transaction must be given exclusive access to item x.

Databases MySQL "FLUSH TABLES WITH READ LOCK" started automatically
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Operators use a lock hierarchy to declare intent to read or update data at higher level (page or table level, ignoring partition level options). When a thread has a read lock on a row/table, no thread. A read lock conflicts when. Multiple read locks can be acquired by multiple threads at the same time. The read lock may be held simultaneously by multiple reader threads, so long as there are no writers. A read lock is a shared lock, multiple readers can held a read lock simultaneously. However, if a transaction demands a write query on item x, then that transaction must be given exclusive access to item x. Thus spinlocks do not exploit this potential parallelism. Spinlocks don't differentiate between read and read/write access.

Databases MySQL "FLUSH TABLES WITH READ LOCK" started automatically

What Is Read Lock The read lock may be held simultaneously by multiple reader threads, so long as there are no writers. A read lock is a shared lock, multiple readers can held a read lock simultaneously. Operators use a lock hierarchy to declare intent to read or update data at higher level (page or table level, ignoring partition level options). When a thread has a read lock on a row/table, no thread. However, if a transaction demands a write query on item x, then that transaction must be given exclusive access to item x. Thus spinlocks do not exploit this potential parallelism. Multiple read locks can be acquired by multiple threads at the same time. A read lock conflicts when. Spinlocks don't differentiate between read and read/write access. The read lock may be held simultaneously by multiple reader threads, so long as there are no writers.

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