默认情况下，Tomcat的WebSocket最大连接数为200。通过修改server.xml中的maxThreads参数可提升并发数，但仅调整线程数并不足够，还需要考虑业务处理速度和可能的性能瓶颈。当单节点压力过大时，可考虑使用WebSocket第三方服务，如GoEasy，它提供高性能的WebSocket解决方案，支持多种前端和后端技术。
默认情况下，Tomcat的WebSocket最大连接数为200。
WebSocket后台代码
package com.chat.demo;
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* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
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* http://www.apache.org/licenses/LICENSE-2.0
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