Use a single MongoClient across a JavaEE web service

Question

After reading the mongo documentation that says each instance of a MongoClient handles its own pooling, how would I go about only having one instance across my whole applica

Answer 1

Since you are in a java ee environment, the best way to implement this would be to use CDI producers:

@Stateless
public class ConnetionFactory {

  @ApplicationScoped
  @Produces
  public MongoClient mongoClient() {
    return new MongoClient();
  }
}

Then in every bean you want to use it in:

@Stateless
public class MyServiceBean {

  @Inject
  private MongoClient mongoClient;
}