Java Mongo Connection Pooling（改变连接池的大小）
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Mongo Connection Pooling(Changing the size of connection pool)
提问by neoeahit
How to change the mongo connection pool size?
如何更改 mongo 连接池大小？
I have seen it is 100 by default. Is there a way to change this value?
我已经看到它默认为 100。有没有办法改变这个值？
I dont want to do it via spring, is there a way to configure it via MongoClient?
我不想通过 spring 来做，有没有办法通过 MongoClient 配置它？
There is an option i see about mongoClientOptions but i dont see options to set connection pool
我看到了一个关于 mongoClientOptions 的选项，但我没有看到设置连接池的选项
采纳答案by evanwong
You can build your own MongoClient instance using the MongoClientOptions.Builder.
您可以使用MongoClientOptions.Builder构建自己的 MongoClient 实例。
MongoClientOptions.Builder builder = new MongoClientOptions.Builder();
MongoClientOptions options = builder.connectionsPerHost(10).build();
MongoClient client = new MongoClient(listOfServers, options);
回答by Alex Efimov
As another option(and more convenient for me), connection pool size can be changed via MongoDb URI. Sample:
作为另一种选择（对我来说更方便），可以通过 MongoDb URI 更改连接池大小。样本：
MONGODB_URI (mongo): mongodb://user:password@localhost:27017/users_db?ssl=true&maxPoolSize=10&readPreference=primaryPreferred&replicaSet=Dev-shard-0&authSource=admin
Where maxPoolSize=10param is max amount of connections.
There are also some additional parameters for configuring connection pool in such way, for details - refer to the documentation - https://docs.mongodb.com/manual/reference/connection-string/
其中maxPoolSize=10param 是最大连接数。还有一些额外的参数用于以这种方式配置连接池，有关详细信息 - 请参阅文档 - https://docs.mongodb.com/manual/reference/connection-string/
回答by Bit-Man
Extra options can also be set using MongoClientURI :
还可以使用 MongoClientURI 设置额外的选项：
MongoClientOptions.Builder builder = new MongoClientOptions.Builder().connectionsPerHost(10));
MongoClientURI clientURI = new MongoClientURI(connectionURL, builder);
MongoClient mongoClient = new MongoClient(clientURI);
