com.atlassian.confluence.plugins.createcontent.concurrent

Interface LazyInsertExecutor

All Known Implementing Classes:

ClusterConcurrentLazyInsertExecutor

public interface LazyInsertExecutor

Method Summary

Modifier and Type	Method and Description
<T> T	lazyInsertAndRead(LazyInserter<T> inserter, String lockKey) Do a non-lock read first, then if find no result, do a re-read and insert inside a lock.

Method Detail

lazyInsertAndRead

<T> T lazyInsertAndRead(LazyInserter<T> inserter,
                        String lockKey)

Do a non-lock read first, then if find no result, do a re-read and insert inside a lock.

Most of the time (except for the first couple concurrent reads), the first read succeeds and returns right away, so we don't need a lock.

Parameters:

lockKey - the key for acquiring lock. Different keys result in different locks (no contention).

Returns:

either value returned by inserter#read() or value returned by inserter#insert()