JSPM

Impress Application Server for node.js. All decisions are made. Solutions are scaled. Tools are provided and optimized for high load.

Impress (Impress Application Server) way:

• Application can't include Application Server, quite the opposite, Application Server is a container for Applications;
• Separate business logic and system code;
• Applied code simplicity;
• Support for both Stateful and Stateless approach;
• No I/O is faster even then async I/O, so maximum memory usage and lazy I/O is the choice;

Features

• Can serve multiple applications;
• Support multiple domains;
• Serves multiple ports, network interfaces, hosts and protocols;
• Can scale on multiple processes and servers;
• Supports application sandboxing (configuration, file system, database and memory access isolation);
• Utilize multiple CPU cores with instances/workers:
  • Inter-process communication (not using built-in node.js cluster library);
  • State synchronization mechanism with transactions and subscription;
• No need to write routing manually in code, just create handler files and put sync or async lambdas there;
• File system watching for cache reloading when file changes on disk;
• Cache server-side executable JavaScript in memory;
• API development support (simple JSON-based WEB-services development):
  • RPC-style API (Stateful, state stored in memory between requests);
  • REST-style API (Stateless, each call is separate, no state in memory);
  • JSTP (long-live and full duplex RPC/MQ over TCP or websockets);
• Serving static files from memory with in-memory preprocessing;
• Built-in sessions support with authentication, groups and anonymous;
• Multiple protocols support:
  • JSTP (JavaScript Transfer Protocol) for RPC and messaging; See https://github.com/metarhia/jstp for details;
  • HTTP and HTTPS (node native libraries);
  • WebSockets support;
  • TCP and UDP sockets support;
• Server-wide or application-specific logging, with log buffering (lazy write) and rotation (keep logs N days);
• Connection drivers for database PostgreSQL, Relational schema generator from JSON database schemas;
• File utilities: upload, download, streaming;
• Built-in simple testing framework;
• Server health monitoring;
• Built-in data structures validation and preprocessing library;
• Long workers with client object forwarding to separate process;
• Task scheduling (interval or certain time);

Installation and upgrade

• Install to the current folder: npm install impress
• Install using package.json: add to dependencies and run npm install
• Installation scripts for an empty server (from the scratch)
  • For CentOS 7 x64 /deploy/centos7x64.sh
  • For Ubuntu 14, 16 and 18 /deploy/ubuntu.sh
  • For Debian 8 and 9 /deploy/debian.sh
  • For Fedora 27, 28, 29 for x64 /deploy/fedora.sh

You can prepare scripts based on examples above and run at a target server shell: curl http://.../install.sh | sh or wget http://.../install.sh -O - | sh

If Impress Application Server is already installed in directory you want to install/update it using npm, /applications directory contains applications and /config contains configuration, Impress will safely detect previous installation and update libraries and dependencies.

Impress CLI commands

You can use following commands from any directory:

• impress path <path> to display or change path to IAS
• impress start to start IAS server
• impress stop to stop IAS server
• impress restart to restart IAS server
• impress status to display IAS status
• impress update to update IAS version
• impress autostart [on|off] to add/remove IAS to autostart on system reboot
• impress list to see IAS applications list
• impress add [path] to add application
• impress remove [name] to remove application
• impress new [name] to create application

Contributors

• Timur Shemsedinov (marcusaurelius)
• See github for full contributors list

License

Dual licensed under the MIT or RUMI licenses. Copyright (c) 2012-2019 Metarhia contributors. Project coordinator: <timur.shemsedinov@gmail.com>

RUMI License: Everything that you want, you are already that. // Jalal ad-Din Muhammad Rumi