PoolingHttpClientConnectionManager vs. PoolingNHttpClientConnectionManager

问题

org.apache.http.impl.conn.PoolingHttpClientConnectionManager org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager

What is the difference between these two types? Which one is more reliable in a multithreaded environment?

Thanks

回答1:

What is the difference between these two types?

PoolingHttpClientConnectionManager maintains a pool of HttpClientConnections, which provides synchronous/blocking communication.

PoolingNHttpClientConnectionManager maintains a pool of NHttpClientConnections, which provides asynchronous/non-blocking and event driven communication.

Which one is more reliable in a multithreaded environment?

Both types are annotated with @Contract which has an element to indicate the threading behavior enforced at runtime.

PoolingHttpClientConnectionManager is annotated with @Contract(threading=SAFE_CONDITIONAL) which indicates it's thread-safe if the dependencies injected at construction time are thread-safe.

PoolingNHttpClientConnectionManager is annotated with @Contract(threading=SAFE), so it can be considered fully thread-safe.

来源：https://stackoverflow.com/questions/46217135/poolinghttpclientconnectionmanager-vs-poolingnhttpclientconnectionmanager