资 源 简 介
Basic introduction& Background
This is a light weight and easy to use Java Object Relation Map framework. Especially optimized for speed and multi-thread environments.
The initialization goal of design is that reduce conflict of Android SQLite based content provider under multi-thread environment. Due to the lock mechanism of SQLite, the concurrency performance of SQLite is very poor. for example that if do 5000 insert and 100 query in 3 threads, sometimes the total time will up to 30 minutes. The main cause of poor performance is that SQLite takes database level lock during writing. Any ongoing changes will lock whole database and block any other operation to go. So the original SQLite is not designed to multi-thread intensive usage environment. If so the performance will be dramatically drag down.
This framework resolves the performance issue of SQLite by creating an in-memory cache of object and applying smart database writing in back ground.
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