| nn_pair(7) |
| ========== |
| |
| NAME |
| ---- |
| nn_pair - one-to-one scalability protocol |
| |
| |
| SYNOPSIS |
| -------- |
| *#include <nanomsg/nn.h>* |
| |
| *#include <nanomsg/pair.h>* |
| |
| |
| DESCRIPTION |
| ----------- |
| Pair protocol is the simplest and least scalable scalability protocol. It allows |
| scaling by breaking the application in exactly two pieces. For example, |
| if a monolithic application handles both accounting and agenda of HR department, |
| it can be split into two applications (accounting vs. HR) that are run on two |
| separate servers. These applications can then communicate via PAIR sockets. |
| |
| The downside of this protocol is that its scaling properties are very limited. |
| Splitting the application into two pieces allows to scale the two servers. |
| To add the third server to the cluster, application has to be split once more, |
| say by separating HR functionality into hiring module and salary computation |
| module. Whenever possible, try to use one of the more scalable protocols |
| instead. |
| |
| Socket Types |
| ~~~~~~~~~~~~ |
| |
| NN_PAIR:: |
| Socket for communication with exactly one peer. Each party can send messages |
| at any time. If the peer is not available or send buffer is full subsequent |
| calls to linknanomsg:nn_send[3] will block until it's possible to send the |
| message. |
| |
| Socket Options |
| ~~~~~~~~~~~~~~ |
| |
| No protocol-specific socket options are defined at the moment. |
| |
| SEE ALSO |
| -------- |
| linknanomsg:nn_bus[7] |
| linknanomsg:nn_pubsub[7] |
| linknanomsg:nn_reqrep[7] |
| linknanomsg:nn_pipeline[7] |
| linknanomsg:nn_survey[7] |
| linknanomsg:nanomsg[7] |
| |
| |
| AUTHORS |
| ------- |
| Martin Sustrik <sustrik@250bpm.com> |
| |
