Blocking and non-blocking I/O
You can use libraries in various ways with respect to I/O and application models.
The library is designed internally to use non-blocking I/O.
In the simpler use cases, however, the
lcb_wait() function is used to block the application while it awaits the completion of pending operations.
lcb_wait() function is called the library will start its internal event loop and keep the event loop running (and blocking the application) until all pending requests have been completed.
A pending request is the result of a scheduling operation (such as