ZhouXY108/hutool
1
0
Fork 0
mirror of https://gitee.com/chinabugotech/hutool.git synced 2025-05-09 23:51:34 +08:00
Code Issues Packages Projects Releases Wiki Activity

Cache增加get重载，可自定义超时时间

Browse Source
This commit is contained in:
Looly 2023-11-14 09:10:41 +08:00
parent fbe78688a1
commit 1b423b2e0f
3 changed files with 26 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
hutool-core/src/main/java/org/dromara/hutool/core/cache/Cache.java vendored
View File

@ -104,6 +104,21 @@ public interface Cache<K, V> extends Iterable<V>, Serializable {
*/
V get(K key, boolean isUpdateLastAccess, SerSupplier<V> supplier);
/**
* 从缓存中获得对象，当对象不在缓存中或已经过期返回SerSupplier回调产生的对象
* <p>
* 调用此方法时，会检查上次调用时间，如果与当前时间差值大于超时时间返回{@code null}，否则返回值。
* <p>
* 每次调用此方法会可选是否刷新最后访问时间，{@code true}表示会重新计算超时时间。
*
* @param key 键
* @param isUpdateLastAccess 是否更新最后访问时间，即重新计算超时时间。
* @param timeout 自定义超时时间
* @param supplier 如果不存在回调方法，用于生产值对象
* @return 值对象
*/
V get(K key, boolean isUpdateLastAccess, final long timeout, SerSupplier<V> supplier);
/**
* 从缓存中获得对象，当对象不在缓存中或已经过期返回{@code null}
* <p>

7
hutool-core/src/main/java/org/dromara/hutool/core/cache/impl/AbstractCache.java vendored
View File

@ -121,6 +121,11 @@ public abstract class AbstractCache<K, V> implements Cache<K, V> {
@Override
public V get(final K key, final boolean isUpdateLastAccess, final SerSupplier<V> supplier) {
return get(key, isUpdateLastAccess, this.timeout, supplier);
}
@Override
public V get(final K key, final boolean isUpdateLastAccess, final long timeout, final SerSupplier<V> supplier) {
V v = get(key, isUpdateLastAccess);
if (null == v && null != supplier) {
//每个key单独获取一把锁，降低锁的粒度提高并发能力，see pr#1385@Github
@ -131,7 +136,7 @@ public abstract class AbstractCache<K, V> implements Cache<K, V> {
final CacheObj<K, V> co = getWithoutLock(key);
if (null == co || co.isExpired()) {
v = supplier.get();
put(key, v, this.timeout);
put(key, v, timeout);
} else {
v = co.get(isUpdateLastAccess);
}

5
hutool-core/src/main/java/org/dromara/hutool/core/cache/impl/NoCache.java vendored
View File

@ -69,6 +69,11 @@ public class NoCache<K, V> implements Cache<K, V> {
@Override
public V get(final K key, final boolean isUpdateLastAccess, final SerSupplier<V> supplier) {
return get(key, isUpdateLastAccess, 0, supplier);
}
@Override
public V get(final K key, final boolean isUpdateLastAccess, final long timeout, final SerSupplier<V> supplier) {
return (null == supplier) ? null : supplier.get();
}