Rather, use the return value REDIS_OK and REDIS_ERR to designate if
calling a function has a successful outcome. When there was an error in
performing the call the error field will be set inside the reader or the
context.
The context supports both blocking and non-blocking connections. All
read and write events are not handled by hiredis, but hiredis exposes an
API for buffered reading/writing to Redis.
Allows libraries to wrap the reply parsing code and build the reply in a
streaming fashion. Reply objects can immediately be initialized to the
required type without having to convert an intermediary format.
