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HLD Sample

HLD Sample

Owned by Gurmukh Singh
Last updated: Jun 27, 2023
1 min read

High-level design (HLD) explains the architecture that would be used to develop a system. The architecture diagram provides an overview of an entire system, identifying the main components that would be developed for the product and their interfaces. The HLD can use non-technical to mildly technical terms which should be understandable to the administrators of the system.

Requirements : Need to define requirements for what we need to make.
Eg: We need to take and store users' info in our project.

Domain model : We will write all entities info those we are going to make in project. For eg:

  • User is an entity and will be stored in one collection.

  • Properties are client defined attribute those were store again User entity.

System Diagram : We will mention what we are going to make in code. For eg:

  • We will make apis for create/edit/fetch/delete the user.

  • Postman will interact with the service to create/edit/fetch the user.

  • We will also use memcache for faster retrieval.

  • We will update memcache after insertion, updation and deletion.

Sequence Diagram :

Tech Stack :

  • Frontend : Postman/Angular 2+

  • Backend : JAVA, Cloud Endpoints

  • Database : MySQL DB/ NoSQL (mongoDB) DB

  • Cloud : AppEngine

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