Translation Caching:man_technologist:

Introduction and Goal 🥅

A web server with a RESTful API that exposes an API that translate a text from one language to another.

Tasks Performed:performing_arts:

• Created a web server with a RESTful API using NodeJS to translate a text from one language to another using google-traslate-api
• Target Language is defined by user and can be requested by API
• Caching of data is done to avoid repeated hits to the translation API using redis
• Server implemented with extensible architecture for switching caching startegy or switching translation service.
• Wrote Tests to test the APIs using mocha and chai
• Linting of code is done using ESLint

Motivation behind using redis for caching:dart:

Redis	RDBMS
Redis stores everything in primary memory.	RDBMS stores everything in secondary memory.
In Redis, Read and Write operations are extremely fast because of storing data in primary memory.	In RDBMS, Read and Write operations are slow because of storing data in secondary memory.

Tech Stacks Used:fireworks:

• NodeJS and ExpressJS(NodeJS based application framework)
• Google Translate npm package as an external service for actual translation
• redis used as database cache.
• Mocha and Chai as testing framework
• ESLint for code analysis

Run it locally:computer:

📷📷📷📷📷📷📷 Start with Smile😄😄

1. Install NodeJS⏬
2. Download Redis and open the redis-server file for starting the server (neccesary to run the app)
3. Open the terminal window and write

git clone https://github.com/GovindCodes/TranslationCaching.git

4. Install Dependencies

npm install

This will download all the node modules to your local computer.:clock1::relieved::sun_with_face:

5. Next thing to write on terminal is

npm start

This will run the software on port 3000

6. HURRAHHH💥 You are ready to go to localhost:3000 on your browser and enjoy the traslation caching.

we can observe here that first time the loading time was 2.24 Sec and 2nd time whe i serched for same data it got cached and loading time reduced to 839 milliSec

Testing Code

Run

npn test

Make sure the server file is not already running only the redis server should run

and the test written in test\task.js will run using mocha

ESlint Configuratin file can be found in .eslintrc.js

Database Schema

Key is taken as Input text + desired languae Iso code as string The value returned from the translation Api is stored in value.

Key	Value
Happyhi	प्रसन्न
Hellofr	Bonjour