Banyan

CloudWatch is used to monitor our servers on AWS including our EC2, RDS and ElastiCache. Amazon CloudWatch

As a cloud based POS, we used Android Apps as the business side frontend for our clients. Android SDK

React in conjunction with RefluxJS is used to create an extendable and responsive dashboard for our clients to analyse their daily business activities in their restaurants. React

Gunicorn is WSGI container that we used to run our Tornado code as it supports Asynchronous operations on tornado. Gunicorn

NGINX acts as the gateway server, decoding TLS and load balancing requests to the various downstream servers. nginx

Redis is used to cache data which is rarely changed but often requested like huge JSON structures. Redis

MySQL is where most of our data lies, it's old but it's easier for us from BigData background to use and build on top of. If the data is properly indexed and the servers properly sharded, MySQL is quite performant. MySQL

Tornado with Async/Await coroutines provided in Python 3.5 make up for an excellent stack for a micro-service. Tornado

Python 3.5+ is used to run our Tornado application as it support Async/Await coroutines. Python