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README.md

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   [![Coverage Status](https://coveralls.io/repos/github/ObviousJs/obvious-core/badge.svg?branch=master)](https://coveralls.io/github/ObviousJs/obvious-core?branch=master) [![release](https://img.shields.io/github/release/ObviousJs/obvious-core.svg)](https://github.com/ObviousJs/obvious-core/releases) [![lastCommit](https://img.shields.io/github/last-commit/ObviousJs/obvious-core)](https://github.com/ObviousJs/obvious-core/commits/master) [![](https://img.shields.io/badge/document-%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87-brightgreen)](https://github.com/ObviousJs/obvious-core/blob/master/README.zh.md)
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+> it's an experimental libarary now, do not use in production enviroment
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 ## Introduction
 Obvious is a progressive micro-front-end library. In the micro-front-end architecture, Obvious focuses on solving the  problem of scheduling and communication between micro frontend applications. It aims to help users quickly build a basic micro-front-end system and support deeper customization to achieve a complete and reliable micro-front-end architecture by providing easy-to-understand APIs and flexible middlewares.