这个库在同一个 JVM 中同时包含了 Java 与 Kotlin 两种 API。TicketBroker 是基于 Kotlin 协程的 API，BlockingTicketBroker 则是无需协程即可使用的 Java 友好型阻塞式外观 （基于 java.time.Duration）。它们内部包装的是同一个 broker。
val broker = TicketBroker.connect("127.0.0.1:5225")
broker.waitReady(5.seconds)
val ticket = broker.acquire("key", 5.seconds, 30.seconds)
ticket.release()
broker.close()并发示例（通过账户级锁互斥地存取款）：
suspend fun transaction(broker: TicketBroker, account: Int, delta: Long) {
val key = "account-$account"
val ticket = try {
broker.acquire(key, wait, lease)
} catch (e: Exception) {
log.error("account {} acquire failed: {}", account, e.message)
return
}
try {
val before = balances[account]
yield()
balances[account] = before + delta
} finally {
ticket.close() // 后台自动释放
}
val (action, sign) = if (delta < 0) "withdraw" to '-' else "deposit" to '+'
log.info("account $account $action $sign\$$AMOUNT -> \$${balances[account]}")
}try (BlockingTicketBroker broker = BlockingTicketBroker.connect(List.of("127.0.0.1:5225"))) {
broker.waitReady(Duration.ofSeconds(5));
BlockingTicket ticket = broker.acquire("key", Duration.ofSeconds(5), Duration.ofSeconds(30));
ticket.release();
System.out.println("pass");
}并发示例（账户级锁，使用 ExecutorService 在多线程中同时执行）：
void transaction(BlockingTicketBroker broker, int account, long delta) {
String key = "account-" + account;
try (BlockingTicket ticket = broker.acquire(key, WAIT, LEASE)) {
long before = balances[account];
Thread.yield();
balances[account] = before + delta;
}
String action = delta < 0 ? "withdraw" : "deposit";
char sign = delta < 0 ? '-' : '+';
log.info("account {} {} {}${} -> ${}", account, action, sign, AMOUNT, balances[account]);
}完整示例请参阅 ExampleSimpleTest.kt / ExampleBankTest.kt（Kotlin）， ExampleSimpleJavaTest.java / ExampleBankJavaTest.java（Java）。