Httpcore is a set of low level http transport components that can be used to build custom client and server side http services with a minimal footprint. httpcore supports two i/o models:

- blocking i/o model, based on the classic java i/o;
- non-blocking, event driven i/o model based on java nio.
the blocking i/o model may be more appropriate for data intensive, low latency scenarios, whereas the non-blocking model may be more appropriate for high latency scenarios where raw data throughput is less important than the ability to handle thousands of simultaneous http connections in a resource efficient manner.