It is an event queue, and the structure is changed according to the method.
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| EventQueue |
| ┣ domain |
| ┃ ┣ Post |
| ┃ ┃ ┗ queue |
| ┃ ┃ ┃ ┣ Post.ts - Managing queues per domain |
| ┃ ┃ ┃ ┗ config.ts - queue options |
| ┃ ┗ index.ts |
| ┣ config.ts - default queue options |
| ┗ index.ts |
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