A push notification micro server using Gin framework written in Go (Golang).

<ul>
<li>Support <a href="https://firebase.google.com/docs/cloud-messaging">Firebase Cloud Messaging</a> using <a href="https://github.com/appleboy/go-fcm">go-fcm</a> library for Android.</li>
<li>Support <a href="https://http2.github.io/">HTTP/2</a> Apple Push Notification Service using <a href="https://github.com/sideshow/apns2">apns2</a> library.</li>
<li>Support <a href="https://github.com/go-yaml/yaml">YAML</a> configuration.</li>
<li>Support command line to send single Android or iOS notification.</li>
<li>Support Web API to send push notification.</li>
<li>Support graceful restart &amp; zero downtime deploy using <a href="https://github.com/facebookgo/grace">facebook grace</a>.</li>
<li>Support <a href="https://http2.github.io/">HTTP/2</a> or HTTP/1.1 protocol.</li>
<li>Support notification queue and multiple workers.</li>
<li>Support <code>/api/stat/app</code> show notification success and failure counts.</li>
<li>Support <code>/api/config</code> show your <a href="https://en.wikipedia.org/wiki/YAML">YAML</a> config.</li>
<li>Support store app stat to memory, <a href="http://redis.io/">Redis</a>, <a href="https://github.com/boltdb/bolt">BoltDB</a>, <a href="https://github.com/tidwall/buntdb">BuntDB</a> or <a href="https://github.com/syndtr/goleveldb">LevelDB</a>.</li>
<li>Support <code>p12</code> or <code>pem</code> formtat of iOS certificate file.</li>
<li>Support <code>/sys/stats</code> show response time, status code count, etc.</li>
<li>Support for HTTP proxy to Google server (FCM).</li>
<li>Support retry send notification if server response is fail.</li>
<li>Support expose <a href="https://prometheus.io/">prometheus</a> metrics.</li>
<li>Support install TLS certificates from <a href="https://letsencrypt.org/">Let's Encrypt</a> automatically.</li>
<li>Support send notification through <a href="https://en.wikipedia.org/wiki/Remote_procedure_call">RPC</a> protocol, we use <a href="https://grpc.io/">gRPC</a> as default framework.</li>
</ul>

A push notification micro server using Gin framework written in Go (Golang).

gorush - A push notification server written in Go (Golang).

NATS Server is a simple, high performance open source messaging system for cloud native applications, IoT messaging, and microservices architectures. It implements a highly scalable and elegant publish-subscribe (pub/sub) distribution model. The performant nature of NATS make it an ideal base for building modern, reliable, scalable cloud native distributed systems.


gnatsd - High-Performance server for NATS, the cloud native messaging system.

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle. It is as an alternative to proprietary SaaS messaging, Mattermost brings all your team communication into one place, making it searchable and accessible anywhere. 
 
Mattermost is the only all-in-one solution for developers to collaborate without sacrificing security. Its integrated platform is designed around Channel-based collaboration that connects your people, processes, and tools. Kanban-style Boards make managing projects easier than ever, while Playbooks provide prescribed workflows that drive reliable and repeatable outcomes based on your team’s processes.

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle. It is as an alternative to proprietary SaaS messaging, Mattermost brings all your team communication into one place, making it searchable and accessible anywhere. 



Mattermost - Self-hosted Team Communication Service

NSQ is a realtime distributed messaging platform designed to operate at scale, handling billions of messages per day. It promotes distributed and decentralized topologies without single points of failure, enabling fault tolerance and high availability coupled with a reliable message delivery guarantee. It scales horizontally, without any centralized brokers. Built-in discovery simplifies the addition of nodes to the cluster.
 
<ul>
 <li>support distributed topologies with no SPOF</li>
 <li>horizontally scalable (no brokers, seamlessly add more nodes to the cluster)</li>
 <li>low-latency push based message delivery </li>
 <li>combination load-balanced and multicast style message routing</li>
 <li>excel at both streaming (high-throughput) and job oriented (low-throughput) workloads</li>
 <li>primarily in-memory (beyond a high-water mark messages are transparently kept on disk)</li>
 <li>runtime discovery service for consumers to find producers</li>
 <li>transport layer security (TLS)</li>
 <li>data format agnostic</li>
 <li>few dependencies (easy to deploy) and a sane, bounded, default configuration</li>
 <li>simple TCP protocol supporting client libraries in any language</li>
 <li>HTTP interface for stats, admin actions, and producers (no client library needed to publish)</li>
 <li>integrates with statsd for realtime instrumentation</li>
 <li>robust cluster administration interface</li>
</ul>

NSQ is a realtime distributed messaging platform designed to operate at scale, handling billions of messages per day. It promotes distributed and decentralized topologies without single points of failure, enabling fault tolerance and high availability coupled with a reliable message delivery guarantee. It scales horizontally, without any centralized brokers. Built-in discovery simplifies the addition of nodes to the cluster.

NSQ - A realtime distributed messaging platform in Go

Centrifugal organization is a set of tools to add real-time features on your web site. It brings together several repositories linked by a common purpose – give you a complete and ready to use solution when you want to add real-time events into your web application like Chats, Real-time charts, Notifications, Various counters and even games. 

Centrifugal - Real time messaging in Web applications

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gorush - A push notification server written in Go (Golang).

gnatsd - High-Performance server for NATS, the cloud native messaging system.

Mattermost - Self-hosted Team Communication Service

NSQ - A realtime distributed messaging platform in Go

Centrifugal - Real time messaging in Web applications

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Projects

gorush - A push notification server written in Go (Golang).

gnatsd - High-Performance server for NATS, the cloud native messaging system.

Mattermost - Self-hosted Team Communication Service

NSQ - A realtime distributed messaging platform in Go

Centrifugal - Real time messaging in Web applications

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