How to run

1. Define EMAIL_ADDRESS, EMAIL_PASSWORD, EMAIL_RECIPIENTS we use gmail, so "password" should be generated as shown here: https://dev.to/go/sending-e-mail-from-gmail-using-golang-20bi + where to get application-specific password: https://support.google.com/accounts/answer/185833?visit_id=638690783295069533-1829261997&p=InvalidSecondFactor&rd=1 in .env specify password without spaces
2. Start this up

docker compose up -d

3. Test with request

curl localhost:8080/messages -d '{"message":"test","user":"12me"}'

Tests

Time Taken to Send a Message After Applying All Services

Pipes & Filters

• Measurements: 20ms, 9ms, 4ms, 3ms, 7ms, 4ms, 3ms, 3ms, 4ms, 4ms
• Average: 6.1ms

RabbitMQ

• Measurements: 16ms, 10ms, 8ms, 11ms, 7ms, 8ms, 7ms, 8ms, 7ms, 7ms
• Average: 8.9ms

Summary

• Pipes & Filters is 1.46 times faster on average due to its design (no API communication) in this simple case. However, RabbitMQ would be more reliable in high-complexity scenarios, as the pipeline grows.