auto commit
This commit is contained in:
parent
27f8ef847c
commit
3a51f7a019
@ -509,4 +509,4 @@ private V putForNullKey(V value) {
|
|||||||
- Java 编程思想
|
- Java 编程思想
|
||||||
- [Java Collection Framework](https://www.w3resource.com/java-tutorial/java-collections.php)
|
- [Java Collection Framework](https://www.w3resource.com/java-tutorial/java-collections.php)
|
||||||
- [Iterator 模式](https://openhome.cc/Gossip/DesignPattern/IteratorPattern.htm)
|
- [Iterator 模式](https://openhome.cc/Gossip/DesignPattern/IteratorPattern.htm)
|
||||||
> [What is difference between HashMap and Hashtable in Java?](http://javarevisited.blogspot.hk/2010/10/difference-between-hashmap-and.html)
|
- [What is difference between HashMap and Hashtable in Java?](http://javarevisited.blogspot.hk/2010/10/difference-between-hashmap-and.html)
|
||||||
|
@ -304,7 +304,7 @@ InnoDB 的 MVCC 使用到的快照存储在 Undo 日志中,该日志通过回
|
|||||||
|
|
||||||
## 快照读与当前读
|
## 快照读与当前读
|
||||||
|
|
||||||
快照读指的是读取快照中的数据,而当前读指的是读取最新的数据。
|
快照读读指的是读取快照中的数据,而当前读指的是读取最新的数据。
|
||||||
|
|
||||||
当前读:
|
当前读:
|
||||||
|
|
||||||
@ -322,7 +322,7 @@ update ;
|
|||||||
delete;
|
delete;
|
||||||
```
|
```
|
||||||
|
|
||||||
引入快照读的目的主要是为了免去加锁操作带来的性能开销,但是当前读需要加锁。
|
引入当前读的目的主要是为了免去加锁操作带来的性能开销,但是快照读需要加锁。
|
||||||
|
|
||||||
# 六、Next-Key Locks
|
# 六、Next-Key Locks
|
||||||
|
|
||||||
|
Loading…
x
Reference in New Issue
Block a user