Connection pooling in Spring Boot and mongo db

Question

I am going through spring boot application and mongoDb connection POC. I have added following dependency:

    org.springframew         


        

Answer 1

You cannot do this out of the box with application properties. You need to make use of MongoClientOptions to configure various aspects of connection pool.

Have a look at the documentation for various options available.

Here is a simple example.

@Bean(name="mongoTempl")
public MongoTemplate mongoTempl() throws Exception {
     return new MongoTemplate(createMongoClient(new ServerAddress(host, port))
                              ,dbName);
}


Mongo createMongoClient(ServerAddress serverAddress) {
final MongoClientOptions options = MongoClientOptions.builder()
        .threadsAllowedToBlockForConnectionMultiplier(...)
        .connectionsPerHost(...)
        .connectTimeout(...)
        .maxWaitTime(...)
        .socketKeepAlive(...)
        .socketTimeout(...)
        .heartbeatConnectTimeout(...)
        .minHeartbeatFrequency(...)
        .build();

        return new MongoClient(serverAddress, options);
}