swoole-test

Test Swoole Coroutine feature

Set up

$ composer install
$ docker-compose up -d

How it works

Swoole Http Server runs with one worker only.

If you hit the server with '/?reg_num=<even_number>' it will perform a query that sleeps for 10 seconds. This emulates a very slow query.

Mongo DB

One Swoole server listens on port 8080. It uses mongoDB to perform the slow query. Hitting the server with:

• http://127.0.0.1:8080/?reg_num=2 takes ~10s due to simulated slow query
• http://127.0.0.1:8080/?reg_num=1 Without another active (and blocking) request it is fast, but if a request with a slow query is active then this request is blocked until the other one is finished

PDO MySQL

Second Swoole server listens on port 8081. It uses PDO to perform the slow query. There are two db backends available: Postgres and MySql In the server-pdo.php file you can set $useMySql = false; to let the server use Postgres instead of MySql.

Hitting the server with:

• http://127.0.0.1:8081/?reg_num=2 takes ~10s due to simulated slow query
• http://127.0.0.1:8081/?reg_num=1
  • MySql: Request is not blocked by other requests, due to Coroutine feature
  • Postgres: Coroutine feature does not work, so behaviour is similar to MongoDB scenario