README

Simple Http

Simple http server that provides 3 endpoints:

1. POST /hash accepts a password; returns a job identifier immediately; then waits 5 seconds and compute a SHA512 encoding of the plain text password.
2. GET /hash accepts a job identifier; returns the base64 encoded password hash.
3. GET /stats returns a JSON object for the total hash requests since the server started along with the average time of a hash request in milliseconds.

Purpose

To experiment with a simple Go http server that provides some basic handlers and graceful shutdown.

Technology Stack

• Golang

Setup

No special setup required. To run simply type go run main.go

Notes

• Currently, it artificially takes 5 seconds to convert a plain text password into a SHA512. If the user requests the SHA512 password before the 5 seconds, there will be no return value. This isn't an ideal behaviour/customer experience. It would be better to return a more complex json object what contains a password and status field. The status field would indicate if the password is in a PENDING state for the case when the password hasn't been encoded yet.

For example:

{
  "password": "",
  "status": "PENDING"
}

• Statistical calculations for the /stats endpoint only includes /hash/ calls that were successful.
• One possible optimisation would be to not re-generate new SHA512 for previous passwords that are the same. Instead, just use pointers and create a one-to-many relationship between jobIs and SHA512 passwords.