Load Balancer - Coding Challenge #5

Load balancer implementation with Go. It is a solution to John Crickett's Coding Challenges.

There are 2 main files:

• lb is the load balancer and it implements a Round Robin algorithm, sending requests to three different servers at ports 8081, 8082 and 8083.
• be is a simple backend server written in Go to answer the GET requests.

How to build

Execute make build to create the executables. It will be saved in the bin/ directory.

How to run

Execute three different web servers.

./bin/be -p 8081
./bin/be -p 8082
./bin/be -p 8083

Now, execute the load balancer.

./bin/lb

You can use cURL to make a request to our load balancer.

curl http://localhost:8080

And to simulate multiple requests, you can use wrk.

wrk http://localhost:8080 -t2 -c10 -d2

How to run the tests

Execute make test

You should see a result matching something like:

--- PASS: TestHandlesMultipleClientsAtSameTime (1.00s)
PASS
ok      github.com/andrenbrandao/load-balancer/test     5.021s

License

MIT © André Brandão