JSPM – impress@2.0.5

Package Exports

impress

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (impress) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Impress application server for node.js. All decisions are made and optimized for security, performance, high-intensive network operations, scalability, interactivity, rapid development practices, and clean project structure.

Quick start

Install with npm install impress or copy project template from metarhia/Example
Start server with node server.js or select execution mode (test, dev, prod) use MODE=dev node server.js
See documentation and specifications and project home page: https://metarhia.com

Metarhia and Impress application server way

Applied code needs to be simple and secure, so we use code sandboxing with v8 isolated contexts, worker threads and minimal trusted npm dependencies;
Domain code needs to be separated from system code; so we use DDE, layered (onion) architecture, DI, SOLID:DIP principle and contract-based approach;
Impress supports both stateful applications with RPC and client-session sticky to servers; microservices, centralized and distributed architecture;
No I/O is faster even than async I/O, so we hold state in memory and use lazy I/O for persistent storage;

Features

Auto API routing, just create endpoint files as an async js lambda function;
API code live reload with file system watch (when files change on disk);
Graceful shutdown and application state recovery after reload;
Minimum code size and dependencies;
Can scale on multiple threads and servers;
Code sandboxing for security, dependency injection, and context isolation;
Utilize multiple CPU cores and serve multiple ports with worker threads;
Inter-process communication and shared memory used for state management;
State synchronization mechanism with transactions and subscription;
Cache server-side executable JavaScript in memory;
API development support: AJAX RPC and Websocket support;
Serve static files from memory cache;
Application configuration (for different named environments);
Database access layer for PostgreSQL and Relational db schemas;
Persistent sessions support with authentication, groups, and anonymous;
Multiple protocols: HTTP, HTTPS, WS, WSS;
Logging with buffering (lazy write) and rotation (keep logs N days);
File utilities: upload, download, streaming;
Built-in simple testing framework;
Server health monitoring;
Built-in data structures validation and preprocessing library;
Task scheduling (interval or certain time);
Request queue with timeout and size;
Execution timeout and error handling;

Requirements

Node.js v12.9.0 or later (v14 preferred)
Linux (tested on Fedora 30, Ubuntu 16, 18, 19 and 20, CentOS 7 and 8)
Postgresql 9.5 or later (v11.8 preferred)
OpenSSL v1.1.1 or later (optional, for https & wss)
certbot (recommended but optional)

impress