timeunit_scheduleAtFixedRate方法-更改TimeUnit参数？_浮点值上的TimeUnit - 腾讯云开发者社区

java.util.concurrent.TimeUnit 这个类，相信童鞋们都不陌生。它是一个enum： public enum TimeUnit 好吧，我一直把它当做一个枚举类来用。...偶然看到还有别的用法，大吃一斤，原来 TimeUnit 并不是一个简单的枚举类。...时间单位换算 //小时转换为秒 long sec = TimeUnit.HOURS.toSeconds(1); // 另一种形式 long sec = TimeUnit.SECONDS.convert...(1, TimeUnit.HOURS); sleep() 比如，当前线程休眠5秒，传统的方式如下： Thread.sleep(5000); 用TimeUnit看起来是这样的： TimeUnit.SECONDS.sleep...得掰着手指头 —— 看半天，用TimeUnit就清晰多了。 TimeUnit.DAYS.sleep(1);

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通过java.util.concurrent.TimeUnit来学习枚举

一、背景今天无意间看到了java.util.concurrent.TimeUnit枚举类。想通过这个类谈谈枚举，以及编程规范问题。...二、源码源码： package java.util.concurrent; /** * A {@code TimeUnit} represents time durations at a given...* * A {@code TimeUnit} is mainly used to inform time-based methods * how a given timing parameter...* * @since 1.5 * @author Doug Lea */ public enum TimeUnit { /** * Time unit representing...另外我们通过源码可以看到，为什么TimeUnit.SECONDS.sleep(10);可以让当前线程暂停10秒呢？

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ReentrantLock的lock(), tryLock(), tryLock(long timeout, TimeUnit unit), lockInterruptibly() 及使用场景示例

2.ReentrantLock提供的获取锁的方式 ReentrantLock提供了lock()、tryLock()、tryLock(long timeout, TimeUnit unit)、lock.lockInterruptibly...但是如果就是想使用公平的方式的话，可以试一试tryLock(0, TimeUnit.SECONDS)，几乎跟公平锁没区别，只是会监测中断事件。...3）tryLock(long timeout, TimeUnit unit) public boolean tryLock(long timeout, TimeUnit unit)...但是tryLock（long，TimeUnit）在等待超时之后可以结束等待。...TryLockInterrupt-Thread lockTest----current thread release the lock: Lock-Thread 同时，tryLock(long, TimeUnit

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RxJava 之 TestScheduler

scheduler.advanceTimeTo(10, TimeUnit.MILLISECONDS); 时钟移动到20毫秒。...scheduler.advanceTimeBy(20, TimeUnit.MILLISECONDS); 下面的列子展示了0秒、20秒、40秒会打印不同的结果。...: " + scheduler.now(TimeUnit.MILLISECONDS)); scheduler.advanceTimeTo(20, TimeUnit.SECONDS);...(40, TimeUnit.SECONDS); System.out.println("virtual time: " + scheduler.now(TimeUnit.SECONDS)...time:" + scheduler.now(TimeUnit.SECONDS)); scheduler.advanceTimeBy(2, TimeUnit.SECONDS);

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聊聊jetcache的MultiLevelCache

timeUnit); default void put(K key, V value, long expireAfterWrite, TimeUnit timeUnit) {...); } CacheResult PUT(K key, V value, long expireAfterWrite, TimeUnit timeUnit); default...extends V> map, long expireAfterWrite, TimeUnit timeUnit) { PUT_ALL(map, expireAfterWrite, timeUnit...extends V> map, long expireAfterWrite, TimeUnit timeUnit) { long t = System.currentTimeMillis...timeUnit) { CacheValueHolder cacheObject = new CacheValueHolder(value ,timeUnit.toMillis(

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聊聊httpclient的evict操作

maxIdleTimeUnit : TimeUnit.SECONDS, maxIdleTime, maxIdleTimeUnit); } public...timeUnit) throws InterruptedException { thread.join((timeUnit !...timeUnit : TimeUnit.MILLISECONDS).toMillis(time)); } static class DefaultThreadFactory implements...* @param timeUnit time unit. */ public void closeIdle(final long idletime, final TimeUnit...timeUnit) { Args.notNull(timeUnit, "Time unit"); long time = timeUnit.toMillis(idletime

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聊聊jetcache的MultiLevelCache

timeUnit); default void put(K key, V value, long expireAfterWrite, TimeUnit timeUnit) { PUT...); } CacheResult PUT(K key, V value, long expireAfterWrite, TimeUnit timeUnit); default void...extends V> map, long expireAfterWrite, TimeUnit timeUnit) { PUT_ALL(map, expireAfterWrite, timeUnit...extends V> map, long expireAfterWrite, TimeUnit timeUnit); CacheResult REMOVE(K key); CacheResult...extends V> map, long expireAfterWrite, TimeUnit timeUnit) { long t = System.currentTimeMillis(

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RxJava 过滤操作符

final Observable skipLast(int count) public final Observable skipLast(long time, TimeUnit unit... skipLast(long time, TimeUnit unit, Scheduler scheduler) public final Observable skipLast(long...unit) public final Observable take(long time, TimeUnit unit, Scheduler scheduler) // 反方向 public...unit) public final Observable takeLast(long time, TimeUnit unit, boolean delayError) public final...(1, 20, 0,100, TimeUnit.MILLISECONDS) .sample(300, TimeUnit.MILLISECONDS).subscribe

1.7K1 0

springboot配置okhttp3

OkHttpClient.Builder builder = new OkHttpClient.Builder(); builder.connectTimeout(30, TimeUnit.SECONDS...) .readTimeout(30, TimeUnit.SECONDS) .writeTimeout(30,TimeUnit.SECONDS...OkHttpClient.Builder builder = new OkHttpClient.Builder(); builder.connectTimeout(30, TimeUnit.SECONDS...) .readTimeout(30, TimeUnit.SECONDS) .writeTimeout(30,TimeUnit.SECONDS...) .readTimeout(30, TimeUnit.SECONDS) .writeTimeout(30,TimeUnit.SECONDS

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聊聊httpclient的evict操作

maxIdleTimeUnit : TimeUnit.SECONDS, maxIdleTime, maxIdleTimeUnit); } public void...timeUnit) throws InterruptedException { thread.join((timeUnit !...timeUnit : TimeUnit.MILLISECONDS).toMillis(time)); } static class DefaultThreadFactory implements...* @param timeUnit time unit. */ public void closeIdle(final long idletime, final TimeUnit...timeUnit) { Args.notNull(timeUnit, "Time unit"); long time = timeUnit.toMillis(idletime

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基准测试框架JMH使用详解

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聊聊artemis的CriticalAnalyzerPolicy

unit); long getCheckTimeNanoSeconds(); CriticalAnalyzer setTimeout(long timeout, TimeUnit unit...); long getTimeout(TimeUnit unit); long getTimeoutNanoSeconds(); CriticalAnalyzer addAction...unit) { return this; } @Override public long getTimeout(TimeUnit unit) { return...unit) { if (timeoutNanoSeconds == 0) { timeoutNanoSeconds = TimeUnit.MINUTES.toNanos(...2); } return unit.convert(timeoutNanoSeconds, TimeUnit.NANOSECONDS); } @Override

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缓存穿透、雪崩、击穿实践

stringRedisTemplate.opsForValue().set(key, JSONUtil.toJsonStr(shop), RedisConstants.CACHE_SHOP_TTL, TimeUnit.MINUTES...timeUnit){ stringRedisTemplate.opsForValue().set(key, JSONUtil.toJsonStr(value), time, timeUnit...} /** * 逻辑过期时间 * @param key * @param value * @param time * @param timeUnit...*/ public void setWithLogicalExpire(String key, Object value, Long time, TimeUnit timeUnit)...); return null; } //写入缓存设置超时时间为30min this.set(key, r, time, timeUnit

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求求你，别再开发的时候一用redis分布式锁，就急着去复制粘贴了！lua脚本的实现思路

timeUnit, long time); /** * 上锁 * @param lockName 锁名称 * @param lockValue 锁值...* @param timeUnit 时间单位 * @param time 时间 */ void lock(String lockName, String lockValue,...TimeUnit timeUnit, long time); /** * 线程解锁 * @param lockName 即将解锁的锁名称 */ void...timeUnit, long time) { Jedis jedis = pool.getResource...timeUnit, long time) { if (tryLock(lockName,lockValue,timeUnit,time)) { return;

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针对RedisTemplate实现WatchDog

timeUnit) throws KaToolException { if (ObjectUtil.isEmpty(obj)){...)){ timeUnit=lockConfig.getTimeUnit(); } //线程被锁住了...); log.info("katool=> LockUntil => DistributedLock:{} value:{} extime:{} timeUnit:{}"...finalTimeUnit = timeUnit; Long finalExptime = exptime;...); log.info("katool=> LockUntil => delayDistributedLock:{} value:{} extime:{} timeUnit

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重新说说Redis实现分布式公平可重入锁的实现，这次具体说说异步唤醒机制，这次带上QPS检测

timeUnit,String[] hashkey){ long id = Thread.currentThread().getId();...> submitTask(Runnable run, long delay, TimeUnit timeUnit){ ScheduledFuture submitTask(Callable run, long delay, TimeUnit timeUnit){ ScheduledFuture submitTask(Runnable run,long initdeay, long delay, TimeUnit timeUnit){ ScheduledFuture submitTask(Callable run,long initdeay, long delay, TimeUnit timeUnit){ ScheduledFuture<?

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实战抽象工厂模式

timeUnit) { logger.info("Redis写入数据 key：{} val：{} timeout：{} timeUnit：{}", key, value, timeout...timeUnit) { logger.info("IIR写入数据 key：{} val：{} timeout：{} timeUnit：{}", key, value, timeout,...timeUnit) { logger.info("EGM写入数据 key：{} val：{} timeout：{} timeUnit：{}", key, value, timeout,...timeUnit) { egm.setEx(key, value, timeout, timeUnit); } public void del(String key)...timeUnit) { iir.setExpire(key, value, timeout, timeUnit); } public void del(String

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针对RedisTemplate分布式锁实现WatchDog

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RxJava之timer和interval操作符源码解析

()); } public static Observable timer(long delay, TimeUnit unit, Scheduler scheduler) {...unit; public ObservableTimer(long delay, TimeUnit unit, Scheduler scheduler) { this.delay...public Disposable scheduleDirect(@NonNull Runnable run, long delay, @NonNull TimeUnit unit) { final...public Disposable schedule(@NonNull final Runnable action, long delayTime, @NonNull TimeUnit unit) {...unit) interval(long initialDelay, long period, TimeUnit unit) interval(long period, TimeUnit unit, Scheduler

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8锁问题

8锁问题场景一标准情况访问：两个同步方法，一个对象调用 import java.util.concurrent.TimeUnit; /** * 标准情况下是先sendEmail()　还是先callPhone...场景二两个同步方法，一个对象调用在其中一种方法中添加sleep方法访问 import java.util.concurrent.TimeUnit; /** * sendEmail()休眠三秒后...两个方法持有的是同一把锁，因此谁先拿到锁谁先执行场景三一个同步方法，其中一个改为普通方法，还是一个对象调用 import java.util.concurrent.TimeUnit; /** *...场景四两个同步方法，两个对象调用 import java.util.concurrent.TimeUnit; /** * 被synchronized 修饰的不同方法先执行sendEmail()...场景五两个静态同步方法，一个对象调用 import java.util.concurrent.TimeUnit; /** * 两个静态同步方法都被synchronized 修饰是先sendEmail

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有意思的TimeUnit

通过java.util.concurrent.TimeUnit来学习枚举

ReentrantLock的lock(), tryLock(), tryLock(long timeout, TimeUnit unit), lockInterruptibly() 及使用场景示例

RxJava 之 TestScheduler

聊聊jetcache的MultiLevelCache

聊聊httpclient的evict操作

聊聊jetcache的MultiLevelCache

RxJava 过滤操作符

springboot配置okhttp3

聊聊httpclient的evict操作

基准测试框架JMH使用详解

聊聊artemis的CriticalAnalyzerPolicy

缓存穿透、雪崩、击穿实践

求求你，别再开发的时候一用redis分布式锁，就急着去复制粘贴了！lua脚本的实现思路

针对RedisTemplate实现WatchDog

重新说说Redis实现分布式公平可重入锁的实现，这次具体说说异步唤醒机制，这次带上QPS检测

实战抽象工厂模式

针对RedisTemplate分布式锁实现WatchDog

RxJava之timer和interval操作符源码解析

8锁问题

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