Pingchas's学习笔记

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JPA小记

count值为BigIntegersum值位BigDeciaml

  • pingchas
  • October 31, 2019
  • 701 views
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    Java调用JS代码

    private static void callJs(String data) throws Exception { ScriptEngineManager scriptEngineManager =new ScriptEngineManager(); ScriptEngine engine = scriptEngineManager.getEngineByName(...

  • pingchas
  • August 18, 2019
  • 1023 views
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    利用Redis的发布订阅实现优惠券过期处理

    1.修改配置文件notify-keyspace-events Ex当key失效时会发布消息2.程序订阅消息__keyevent@0__:expired其中 0 为数据库索引

  • pingchas
  • August 13, 2019
  • 1457 views
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    Nginx之ip_hash

    根据用户访问者的IP，永远只会分发到同一台主机。配置:updtream appserver{ ip_hash; server 192.168.0.100; server 192.168.0.101; }

  • pingchas
  • August 12, 2019
  • 500 views
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    Nginx缓存配置

    http节点中配置缓存proxy_cache_path /usr/data/nginx/cache levels=1:2 keys_zone=mycache:10m max_size=10g inactive=60m use_temp_path=off;2.启用配置location / { proxy_pass http://192.168.0.199:808...

  • pingchas
  • August 12, 2019
  • 708 views