如何处理MongoDB中的陈旧连接 [英] How to handle stale connections in MongoDB

问题描述

在Mongo中自动刷新过期连接的最佳方式是什么？

What is the best way of automatically refreshing stale connections in Mongo?

回收mongod服务后，我从Liferay Portlets获取此异常：

After recycling the mongod service I get this exception from my Liferay Portlets:

com.mongodb.MongoException$Network: can't call something : /127.0.0.1:27017/connection_test

推荐答案

我最后编写代码在每个 DBCollection 请求。

I ended up writing code that polls the connection before each DBCollection is requested.

private DBCollection safeColl(String pCollectionName, DBCollection pColl) {
    try {
        if (log.isDebugEnabled()) {
            log.debug("getting safe coll count on coll: " + pColl.getName());
        }
        pColl.count();
    } catch (MongoException e) {
        if (e.getMessage().startsWith("can't call something")) {
            pColl = getCollection(pCollectionName, true);
            return pColl;
        } else {
            throw e;
        }
    }
    return pColl;
}

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