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ConcurrentHashMap lastRequestMap = ...
long now = System.currentTimeMillis()Long lastRequestTime = lastRequestMap.get(userid)if(lastRequestTime != null && lastRequestTime > now - 5秒钟) {
return;
}lastRequestMap.put(userid, now)......
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ConcurrentHashMap lastRequestMap = ...
long now = System.currentTimeMillis()
Long lastRequestTime = lastRequestMap.get(userid)
if(lastRequestTime != null && lastRequestTime > now - 5秒钟) {
}
lastRequestMap.put(userid, now)
......