- 一、Dubbo时间轮简要结构图
- 1.时间轮结构
- 2.项目结构（Dubbo源码取了3.0.2.1版本）
- 二、源码分析（针对主要方法加了个人理解和翻译）
- 1.定时器实现类：HashedWheelTimer
- 2.任务处理接口类：Timeout
- 3.定时器接口类：Timer
- 4.任务接口类：TimerTask
- 三、调用：
- 1.测试接口：
- 2.调试效果：
package com.demo.config.wheel;
import com.mchange.v1.lang.ClassUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
import java.util.concurrent.atomic.AtomicLong;
public class HashedWheelTimer implements Timer {
public static final String NAME = "hased";
private static final Logger logger = LoggerFactory.getLogger(HashedWheelTimer.class);
private static final AtomicInteger INSTANCE_COUNTER = new AtomicInteger();
private static final AtomicBoolean WARNED_TOO_MANY_INSTANCES = new AtomicBoolean();
private static final int INSTANCE_COUNT_LIMIT = 64;
private static final AtomicIntegerFieldUpdater WORKER_STATE_UPDATER =
AtomicIntegerFieldUpdater.newUpdater(HashedWheelTimer.class, "workerState");
private final Worker worker = new Worker();
private final Thread workerThread;
private static final int WORKER_STATE_INIT = 0;
private static final int WORKER_STATE_STARTED = 1;
private static final int WORKER_STATE_SHUTDOWN = 2;
@SuppressWarnings({"unused", "FieldMayBeFinal"})
private volatile int workerState;
private final long tickDuration;
private final HashedWheelBucket[] wheel;
private final int mask;
private final CountDownLatch startTimeInitialized = new CountDownLatch(1);
private final Queue timeouts = new linkedBlockingQueue<>();
private final Queue cancelledTimeouts = new linkedBlockingQueue<>();
private final AtomicLong pendingTimeouts = new AtomicLong(0);
private final long maxPendingTimeouts;
private volatile long startTime;
public HashedWheelTimer() {
this(Executors.defaultThreadFactory());
}
public HashedWheelTimer(long tickDuration, TimeUnit unit) {
this(Executors.defaultThreadFactory(), tickDuration, unit);
}
public HashedWheelTimer(long tickDuration, TimeUnit unit, int ticksPerWheel) {
this(Executors.defaultThreadFactory(), tickDuration, unit, ticksPerWheel);
}
public HashedWheelTimer(ThreadFactory threadFactory) {
this(threadFactory, 100, TimeUnit.MILLISECONDS);
}
public HashedWheelTimer(
ThreadFactory threadFactory, long tickDuration, TimeUnit unit) {
this(threadFactory, tickDuration, unit, 512);
}
public HashedWheelTimer(
ThreadFactory threadFactory,
long tickDuration, TimeUnit unit, int ticksPerWheel) {
this(threadFactory, tickDuration, unit, ticksPerWheel, -1);
}
public HashedWheelTimer(
ThreadFactory threadFactory,
long tickDuration, TimeUnit unit, int ticksPerWheel,
long maxPendingTimeouts) {
if (threadFactory == null) {
throw new NullPointerException("threadFactory");
}
if (unit == null) {
throw new NullPointerException("unit");
}
if (tickDuration <= 0) {
throw new IllegalArgumentException("tickDuration must be greater than 0: " + tickDuration);
}
if (ticksPerWheel <= 0) {
throw new IllegalArgumentException("ticksPerWheel must be greater than 0: " + ticksPerWheel);
}
// Normalize ticksPerWheel to power of two and initialize the wheel.
wheel = createWheel(ticksPerWheel);
mask = wheel.length - 1;
// Convert tickDuration to nanos.
this.tickDuration = unit.toNanos(tickDuration);
// Prevent overflow.
if (this.tickDuration >= Long.MAX_VALUE / wheel.length) {
throw new IllegalArgumentException(String.format(
"tickDuration: %d (expected: 0 < tickDuration in nanos < %d",
tickDuration, Long.MAX_VALUE / wheel.length));
}
workerThread = threadFactory.newThread(worker);
this.maxPendingTimeouts = maxPendingTimeouts;
if (INSTANCE_COUNTER.incrementAndGet() > INSTANCE_COUNT_LIMIT &&
WARNED_TOO_MANY_INSTANCES.compareAndSet(false, true)) {
reportTooManyInstances();
}
}
@Override
protected void finalize() throws Throwable {
try {
super.finalize();
} finally {
// This object is going to be GCed and it is assumed the ship has sailed to do a proper shutdown. If
// we have not yet shutdown then we want to make sure we decrement the active instance count.
if (WORKER_STATE_UPDATER.getAndSet(this, WORKER_STATE_SHUTDOWN) != WORKER_STATE_SHUTDOWN) {
INSTANCE_COUNTER.decrementAndGet();
}
}
}
private static HashedWheelBucket[] createWheel(int ticksPerWheel) {
if (ticksPerWheel <= 0) {
throw new IllegalArgumentException(
"ticksPerWheel must be greater than 0: " + ticksPerWheel);
}
if (ticksPerWheel > 1073741824) {
throw new IllegalArgumentException(
"ticksPerWheel may not be greater than 2^30: " + ticksPerWheel);
}
ticksPerWheel = normalizeTicksPerWheel(ticksPerWheel);
HashedWheelBucket[] wheel = new HashedWheelBucket[ticksPerWheel];
for (int i = 0; i < wheel.length; i++) {
wheel[i] = new HashedWheelBucket();
}
return wheel;
}
private static int normalizeTicksPerWheel(int ticksPerWheel) {
int normalizedTicksPerWheel = ticksPerWheel - 1;
normalizedTicksPerWheel |= normalizedTicksPerWheel >>> 1;
normalizedTicksPerWheel |= normalizedTicksPerWheel >>> 2;
normalizedTicksPerWheel |= normalizedTicksPerWheel >>> 4;
normalizedTicksPerWheel |= normalizedTicksPerWheel >>> 8;
normalizedTicksPerWheel |= normalizedTicksPerWheel >>> 16;
return normalizedTicksPerWheel + 1;
}
public void start() {
switch (WORKER_STATE_UPDATER.get(this)) {
case WORKER_STATE_INIT:
if (WORKER_STATE_UPDATER.compareAndSet(this, WORKER_STATE_INIT, WORKER_STATE_STARTED)) {
workerThread.start();
}
break;
case WORKER_STATE_STARTED:
break;
case WORKER_STATE_SHUTDOWN:
throw new IllegalStateException("cannot be started once stopped");
default:
throw new Error("Invalid WorkerState");
}
// Wait until the startTime is initialized by the worker.
while (startTime == 0) {
try {
startTimeInitialized.await();
} catch (InterruptedException ignore) {
// Ignore - it will be ready very soon.
}
}
}
@Override
public Set stop() {
if (Thread.currentThread() == workerThread) {
throw new IllegalStateException(
HashedWheelTimer.class.getSimpleName() +
".stop() cannot be called from " +
TimerTask.class.getSimpleName());
}
if (!WORKER_STATE_UPDATeR.compareAndSet(this, WORKER_STATE_STARTED, WORKER_STATE_SHUTDOWN)) {
// workerState can be 0 or 2 at this moment - let it always be 2.
if (WORKER_STATE_UPDATER.getAndSet(this, WORKER_STATE_SHUTDOWN) != WORKER_STATE_SHUTDOWN) {
INSTANCE_COUNTER.decrementAndGet();
}
return Collections.emptySet();
}
try {
boolean interrupted = false;
while (workerThread.isAlive()) {
workerThread.interrupt();
try {
workerThread.join(100);
} catch (InterruptedException ignored) {
interrupted = true;
}
}
if (interrupted) {
Thread.currentThread().interrupt();
}
} finally {
INSTANCE_COUNTER.decrementAndGet();
}
return worker.unprocessedTimeouts();
}
@Override
public boolean isStop() {
return WORKER_STATE_SHUTDOWN == WORKER_STATE_UPDATER.get(this);
}
@Override
public Timeout newTimeout(TimerTask task, long delay, TimeUnit unit) {
if (task == null) {
throw new NullPointerException("task");
}
if (unit == null) {
throw new NullPointerException("unit");
}
long pendingTimeoutsCount = pendingTimeouts.incrementAndGet();
if (maxPendingTimeouts > 0 && pendingTimeoutsCount > maxPendingTimeouts) {
pendingTimeouts.decrementAndGet();
throw new RejectedExecutionException("Number of pending timeouts ("
+ pendingTimeoutsCount + ") is greater than or equal to maximum allowed pending "
+ "timeouts (" + maxPendingTimeouts + ")");
}
start();
// Add the timeout to the timeout queue which will be processed on the next tick.
// During processing all the queued HashedWheelTimeouts will be added to the correct HashedWheelBucket.
long deadline = System.nanoTime() + unit.toNanos(delay) - startTime;
// Guard against overflow.
if (delay > 0 && deadline < 0) {
deadline = Long.MAX_VALUE;
}
HashedWheelTimeout timeout = new HashedWheelTimeout(this, task, deadline);
timeouts.add(timeout);
return timeout;
}
public long pendingTimeouts() {
return pendingTimeouts.get();
}
private static void reportTooManyInstances() {
String resourceType = ClassUtils.simpleClassName(HashedWheelTimer.class);
logger.error("You are creating too many " + resourceType + " instances. " +
resourceType + " is a shared resource that must be reused across the JVM," +
"so that only a few instances are created.");
}
private final class Worker implements Runnable {
private final Set unprocessedTimeouts = new HashSet();
private long tick;
@Override
public void run() {
// 初始化启动时间 纳秒 Initialize the startTime.
startTime = System.nanoTime();
if (startTime == 0) {
// We use 0 as an indicator for the uninitialized value here, so make sure it's not 0 when initialized.
startTime = 1;
}
// 等待初始化线程执行完成 Notify the other threads waiting for the initialization at start().
startTimeInitialized.countDown();
do {
final long deadline = waitForNextTick();
if (deadline > 0) {
int idx = (int) (tick & mask);
processCancelledTasks();
HashedWheelBucket bucket =
wheel[idx];
transferTimeoutsToBuckets();
bucket.expireTimeouts(deadline);
tick++;
}
} while (WORKER_STATE_UPDATER.get(HashedWheelTimer.this) == WORKER_STATE_STARTED);
// Fill the unprocessedTimeouts so we can return them from stop() method.
for (HashedWheelBucket bucket : wheel) {
bucket.clearTimeouts(unprocessedTimeouts);
}
for (; ; ) {
HashedWheelTimeout timeout = timeouts.poll();
if (timeout == null) {
break;
}
if (!timeout.isCancelled()) {
unprocessedTimeouts.add(timeout);
}
}
processCancelledTasks();
}
private void transferTimeoutsToBuckets() {
// transfer only max. 100000 timeouts per tick to prevent a thread to stale the workerThread when it just
// adds new timeouts in a loop.
for (int i = 0; i < 100000; i++) {
HashedWheelTimeout timeout = timeouts.poll();
if (timeout == null) {
// all processed
break;
}
if (timeout.state() == HashedWheelTimeout.ST_CANCELLED) {
// Was cancelled in the meantime.
continue;
}
long calculated = timeout.deadline / tickDuration;
timeout.remainingRounds = (calculated - tick) / wheel.length;
// Ensure we don't schedule for past.
final long ticks = Math.max(calculated, tick);
int stopIndex = (int) (ticks & mask);
HashedWheelBucket bucket = wheel[stopIndex];
bucket.addTimeout(timeout);
}
}
private void processCancelledTasks() {
for (; ; ) {
HashedWheelTimeout timeout = cancelledTimeouts.poll();
if (timeout == null) {
// all processed
break;
}
try {
timeout.remove();
} catch (Throwable t) {
if (logger.isWarnEnabled()) {
logger.warn("An exception was thrown while process a cancellation task", t);
}
}
}
}
private long waitForNextTick() {
long deadline = tickDuration * (tick + 1);
for (; ; ) {
final long currentTime = System.nanoTime() - startTime;
long sleepTimeMs = (deadline - currentTime + 999999) / 1000000;
if (sleepTimeMs <= 0) {
if (currentTime == Long.MIN_VALUE) {
return -Long.MAX_VALUE;
} else {
return currentTime;
}
}
if (isWindows()) {
sleepTimeMs = sleepTimeMs / 10 * 10;
}
try {
Thread.sleep(sleepTimeMs);
} catch (InterruptedException ignored) {
if (WORKER_STATE_UPDATeR.get(HashedWheelTimer.this) == WORKER_STATE_SHUTDOWN) {
return Long.MIN_VALUE;
}
}
}
}
Set unprocessedTimeouts() {
return Collections.unmodifiableSet(unprocessedTimeouts);
}
}
private static final class HashedWheelTimeout implements Timeout {
private static final int ST_INIT = 0;
private static final int ST_CANCELLED = 1;
private static final int ST_EXPIRED = 2;
private static final AtomicIntegerFieldUpdater STATE_UPDATER =
AtomicIntegerFieldUpdater.newUpdater(HashedWheelTimeout.class, "state");
private final HashedWheelTimer timer;
private final TimerTask task;
private final long deadline;
@SuppressWarnings({"unused", "FieldMayBeFinal", "RedundantFieldInitialization"})
private volatile int state = ST_INIT;
long remainingRounds;
HashedWheelTimeout next;
HashedWheelTimeout prev;
HashedWheelBucket bucket;
HashedWheelTimeout(HashedWheelTimer timer, TimerTask task, long deadline) {
this.timer = timer;
this.task = task;
this.deadline = deadline;
}
@Override
public Timer timer() {
return timer;
}
@Override
public TimerTask task() {
return task;
}
@Override
public boolean cancel() {
if (!compareAndSetState(ST_INIT, ST_CANCELLED)) {
return false;
}
// If a task should be canceled we put this to another queue which will be processed on each tick.
// So this means that we will have a GC latency of max. 1 tick duration which is good enough. This way
// we can make again use of our MpsclinkedQueue and so minimize the locking / overhead as much as possible.
timer.cancelledTimeouts.add(this);
return true;
}
void remove() {
HashedWheelBucket bucket = this.bucket;
if (bucket != null) {
bucket.remove(this);
} else {
timer.pendingTimeouts.decrementAndGet();
}
}
public boolean compareAndSetState(int expected, int state) {
return STATE_UPDATER.compareAndSet(this, expected, state);
}
public int state() {
return state;
}
@Override
public boolean isCancelled() {
return state() == ST_CANCELLED;
}
@Override
public boolean isExpired() {
return state() == ST_EXPIRED;
}
public void expire() {
if (!compareAndSetState(ST_INIT, ST_EXPIRED)) {
return;
}
try {
task.run(this);
} catch (Throwable t) {
if (logger.isWarnEnabled()) {
logger.warn("An exception was thrown by " + TimerTask.class.getSimpleName() + '.', t);
}
}
}
@Override
public String toString() {
final long currentTime = System.nanoTime();
long remaining = deadline - currentTime + timer.startTime;
String simpleClassName = ClassUtils.simpleClassName(this.getClass());
StringBuilder buf = new StringBuilder(192)
.append(simpleClassName)
.append('(')
.append("deadline: ");
if (remaining > 0) {
buf.append(remaining)
.append(" ns later");
} else if (remaining < 0) {
buf.append(-remaining)
.append(" ns ago");
} else {
buf.append("now");
}
if (isCancelled()) {
buf.append(", cancelled");
}
return buf.append(", task: ")
.append(task())
.append(')')
.toString();
}
}
private static final class HashedWheelBucket {
private HashedWheelTimeout head;
private HashedWheelTimeout tail;
void addTimeout(HashedWheelTimeout timeout) {
assert timeout.bucket == null;
timeout.bucket = this;
if (head == null) {
head = tail = timeout;
} else {
tail.next = timeout;
timeout.prev = tail;
tail = timeout;
}
}
void expireTimeouts(long deadline) {
HashedWheelTimeout timeout = head;
// process all timeouts
while (timeout != null) {
HashedWheelTimeout next = timeout.next;
if (timeout.remainingRounds <= 0) {
next = remove(timeout);
if (timeout.deadline <= deadline) {
timeout.expire();
} else {
// The timeout was placed into a wrong slot. This should never happen.
throw new IllegalStateException(String.format(
"timeout.deadline (%d) > deadline (%d)", timeout.deadline, deadline));
}
} else if (timeout.isCancelled()) {
next = remove(timeout);
} else {
timeout.remainingRounds--;
}
timeout = next;
}
}
public HashedWheelTimeout remove(HashedWheelTimeout timeout) {
HashedWheelTimeout next = timeout.next;
// remove timeout that was either processed or cancelled by updating the linked-list
if (timeout.prev != null) {
timeout.prev.next = next;
}
if (timeout.next != null) {
timeout.next.prev = timeout.prev;
}
if (timeout == head) {
// if timeout is also the tail we need to adjust the entry too
if (timeout == tail) {
tail = null;
head = null;
} else {
head = next;
}
} else if (timeout == tail) {
// if the timeout is the tail modify the tail to be the prev node.
tail = timeout.prev;
}
// null out prev, next and bucket to allow for GC.
timeout.prev = null;
timeout.next = null;
timeout.bucket = null;
timeout.timer.pendingTimeouts.decrementAndGet();
return next;
}
void clearTimeouts(Set set) {
for (; ; ) {
HashedWheelTimeout timeout = pollTimeout();
if (timeout == null) {
return;
}
if (timeout.isExpired() || timeout.isCancelled()) {
continue;
}
set.add(timeout);
}
}
private HashedWheelTimeout pollTimeout() {
HashedWheelTimeout head = this.head;
if (head == null) {
return null;
}
HashedWheelTimeout next = head.next;
if (next == null) {
tail = this.head = null;
} else {
this.head = next;
next.prev = null;
}
// null out prev and next to allow for GC.
head.next = null;
head.prev = null;
head.bucket = null;
return head;
}
}
private static final boolean IS_OS_WINDOWS = System.getProperty("os.name", "").toLowerCase(Locale.US).contains("win");
private boolean isWindows() {
return IS_OS_WINDOWS;
}
}
2.任务处理接口类：Timeout
package com.demo.config.wheel;
public interface Timeout {
Timer timer();
TimerTask task();
boolean isExpired();
boolean isCancelled();
boolean cancel();
}
3.定时器接口类：Timer
package com.demo.config.wheel;
import java.util.Set;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.TimeUnit;
public interface Timer {
Timeout newTimeout(TimerTask task, long delay, TimeUnit unit);
Set stop();
boolean isStop();
}
4.任务接口类：TimerTask
package com.demo.config.wheel;
import java.util.concurrent.TimeUnit;
public interface TimerTask {
void run(Timeout timeout) throws Exception;
}
三、调用：
1.测试接口：
package com.demo.controller;
import com.demo.config.wheel.HashedWheelTimer;
import com.demo.config.wheel.Timeout;
import com.demo.config.wheel.TimerTask;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.concurrent.TimeUnit;
@RestController
@RequestMapping("/delay")
@Slf4j
public class WheelController {
private HashedWheelTimer wheelTimer = new HashedWheelTimer();
private Timeout timeout;
public WheelController(){
TimerTask task = timeout -> {
log.info("时间轮启动，我是第一格：{}", TimeUnit.MILLISECONDS.toSeconds(System.currentTimeMillis()));
};
timeout = wheelTimer.newTimeout(task,1,TimeUnit.SECONDS);
wheelTimer.start();
}
@GetMapping("/wheel")
public void wheel(int delay){
long current = TimeUnit.MILLISECONDS.toSeconds(System.currentTimeMillis());
TimerTask task = timeout1 -> {
log.info("任务创建于：{} 延迟 [{}] 秒后执行，当前时间：{}",current,delay,TimeUnit.MILLISECONDS.toSeconds(System.currentTimeMillis()));
};
wheelTimer.newTimeout(task,delay,TimeUnit.SECONDS);
}
}
2.调试效果：
分别下发三个任务，查看触发效果：
顺序如下： 1.http://127.0.0.1:8899/delay/wheel?delay=60 2.http://127.0.0.1:8899/delay/wheel?delay=30 3.http://127.0.0.1:8899/delay/wheel?delay=90
打印日志信息：
先下发延期60秒的任务，立即下发延期30秒的任务；则实际30秒任务会先到期，先执行
. ____ _ __ _ _ /\ / ___'_ __ _ _(_)_ __ __ _ ( ( )___ | '_ | '_| | '_ / _` | \/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |___, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.5.7) 2022-01-06 22:57:49.746 INFO 12524 --- [ main] c.d.DelayApplication : Starting DelayApplication using Java 17.0.1 on zhx_yue with PID 12524 (E:IdeaProjectsdelay-demotargetclasses started by Administrator in E:IdeaProjectsdelay-demo) 2022-01-06 22:57:49.750 INFO 12524 --- [ main] c.d.DelayApplication : No active profile set, falling back to default profiles: default 2022-01-06 22:57:50.043 INFO 12524 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode! 2022-01-06 22:57:50.044 INFO 12524 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data Redis repositories in DEFAULT mode. 2022-01-06 22:57:50.056 INFO 12524 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 4 ms. Found 0 Redis repository interfaces. 2022-01-06 22:57:50.283 INFO 12524 --- [ main] o.s.b.w.e.t.TomcatWebServer : Tomcat initialized with port(s): 8899 (http) 1月 06, 2022 10:57:50 下午 org.apache.coyote.AbstractProtocol init 信息: Initializing ProtocolHandler ["http-nio-8899"] 1月 06, 2022 10:57:50 下午 org.apache.catalina.core.StandardService startInternal 信息: Starting service [Tomcat] 1月 06, 2022 10:57:50 下午 org.apache.catalina.core.StandardEngine startInternal 信息: Starting Servlet engine: [Apache Tomcat/9.0.55] 1月 06, 2022 10:57:50 下午 org.apache.catalina.core.ApplicationContext log 信息: Initializing Spring embedded WebApplicationContext 2022-01-06 22:57:50.329 INFO 12524 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 558 ms 2022-01-06 22:57:50.652 INFO 12524 --- [ main] o.q.i.StdSchedulerFactory : Using default implementation for ThreadExecutor 2022-01-06 22:57:50.658 INFO 12524 --- [ main] o.q.c.SchedulerSignalerImpl : Initialized Scheduler Signaller of type: class org.quartz.core.SchedulerSignalerImpl 2022-01-06 22:57:50.658 INFO 12524 --- [ main] o.q.c.QuartzScheduler : Quartz Scheduler v.2.3.2 created. 2022-01-06 22:57:50.658 INFO 12524 --- [ main] o.q.s.RAMJobStore : RAMJobStore initialized. 2022-01-06 22:57:50.659 INFO 12524 --- [ main] o.q.c.QuartzScheduler : Scheduler meta-data: Quartz Scheduler (v2.3.2) 'quartzScheduler' with instanceId 'NON_CLUSTERED' Scheduler class: 'org.quartz.core.QuartzScheduler' - running locally. NOT STARTED. Currently in standby mode. Number of jobs executed: 0 Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 10 threads. Using job-store 'org.quartz.simpl.RAMJobStore' - which does not support persistence. and is not clustered. 2022-01-06 22:57:50.659 INFO 12524 --- [ main] o.q.i.StdSchedulerFactory : Quartz scheduler 'quartzScheduler' initialized from an externally provided properties instance. 2022-01-06 22:57:50.659 INFO 12524 --- [ main] o.q.i.StdSchedulerFactory : Quartz scheduler version: 2.3.2 2022-01-06 22:57:50.659 INFO 12524 --- [ main] o.q.c.QuartzScheduler : JobFactory set to: org.springframework.scheduling.quartz.SpringBeanJobFactory@7e191fda 1月 06, 2022 10:57:50 下午 org.apache.coyote.AbstractProtocol start 信息: Starting ProtocolHandler ["http-nio-8899"] 2022-01-06 22:57:50.696 INFO 12524 --- [ main] o.s.b.w.e.t.TomcatWebServer : Tomcat started on port(s): 8899 (http) with context path '' 2022-01-06 22:57:51.021 INFO 12524 --- [ main] o.s.s.q.SchedulerFactoryBean : Starting Quartz Scheduler now 2022-01-06 22:57:51.021 INFO 12524 --- [ main] o.q.c.QuartzScheduler : Scheduler quartzScheduler_$_NON_CLUSTERED started. 2022-01-06 22:57:51.040 INFO 12524 --- [ main] c.d.DelayApplication : Started DelayApplication in 1.526 seconds (JVM running for 2.057) 2022-01-06 22:57:51.564 INFO 12524 --- [pool-2-thread-1] c.d.c.WheelController : 时间轮启动，我是第一格：1641481071 1月 06, 2022 10:58:06 下午 org.apache.catalina.core.ApplicationContext log 信息: Initializing Spring DispatcherServlet 'dispatcherServlet' 2022-01-06 22:58:06.496 INFO 12524 --- [nio-8899-exec-1] o.s.w.s.DispatcherServlet : Initializing Servlet 'dispatcherServlet' 2022-01-06 22:58:06.496 INFO 12524 --- [nio-8899-exec-1] o.s.w.s.DispatcherServlet : Completed initialization in 0 ms 2022-01-06 22:58:44.064 INFO 12524 --- [pool-2-thread-1] c.d.c.WheelController : 任务创建于：1641481093 延迟 [30] 秒后执行，当前时间：1641481124 2022-01-06 22:59:06.564 INFO 12524 --- [pool-2-thread-1] c.d.c.WheelController : 任务创建于：1641481086 延迟 [60] 秒后执行，当前时间：1641481146 2022-01-06 22:59:51.063 INFO 12524 --- [pool-2-thread-1] c.d.c.WheelController : 任务创建于：1641481100 延迟 [90] 秒后执行，当前时间：1641481191
