# Indian Aadhar

Indian Aadhar ID system is one of the world's largest unique digital identity platforms mostly based on Java and commodity hardware.

**Tech Stack for enrollment module.**

\- Java Springboot

\- Hadoop HDFS (Storing enrollment packets)

\- Apache Solr (Search)

\- Mysql

\- MongoDB

\- RabbitMQ (Message queue)

\- Hadoop MapReduce and Pentaho (Analytics)

**Key Takeaways from this architecture.**

\- Define and use APIs for all components

\- Embrace open source, eliminate vendor lock-in

\- Create a single source of truth

\- Build a resilient system

\- Security and privacy should be by design

\- Scalability can’t be bought, architect for it.

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1708097159194/f8e7f4c5-400b-4ae9-a67f-32941f36bb53.png align="center")