In the second installment of "Inside the Java SDK," the article provides an in-depth exploration of how the Java SDK manages and pools sockets across various nodes and services, focusing on releases 2.5.9 and 2.6.0. It introduces a three-layer model of the SDK's connection stack, including the Channel Layer, built on the asynchronous IO library Netty, which handles multiplexing channels across event loops. The Endpoint Layer manages channel lifecycles, handling requests and reconnections, while the Service Layer pools endpoints per node, with dynamic configurations for different services like Query and View. The article also delves into common connection-related errors such as Request Cancellations and Bootstrap Issues, offering insights into handling these effectively. It emphasizes understanding the SDK's socket management and encourages further exploration into the codebase, promising future discussions on the SDK's threading model.