Add Redis Streams option for job delivery #451
+309
−138
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This pull request adds a basic implementation of Redis Streams, in order to avoid polling for new jobs in the worker and reduce latency, in accordance with objective 4 of issue #437.
To create a worker that listens to a Redis Stream, we can use the cli or specify it in the code directly.
CLI:
arq worker.WorkerSettings --stream
Code:
On the client, they must specify that they want to deliver a job to a worker through a Redis Stream.
Here are the results of a very simple benchmark that showcases the potential of using Redis Streams for improved latency.
Polling:
![Captura de pantalla 2024-05-04 a la(s) 8 12 28 a m](https://private-user-images.githubusercontent.com/115488250/327956579-e96cccc4-3bdf-45ee-84ec-87c193f50d8a.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3MjA2ODM3OTMsIm5iZiI6MTcyMDY4MzQ5MywicGF0aCI6Ii8xMTU0ODgyNTAvMzI3OTU2NTc5LWU5NmNjY2M0LTNiZGYtNDVlZS04NGVjLTg3YzE5M2Y1MGQ4YS5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjQwNzExJTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI0MDcxMVQwNzM4MTNaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT1hOWNmOTk1MDlmMDMzNmJlMjMwYmU3ZDM1NjU2MjE0ZjhlYjNhODhjNmRlYmE3ZTFjOTM5MDY4MjljZDYxOTM1JlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCZhY3Rvcl9pZD0wJmtleV9pZD0wJnJlcG9faWQ9MCJ9.76dq9JXDP6Cs-KOkxbrpcwimSwSGErWwQmJWwnuKcVw)
Average time: 0.268s
Streaming:
![Captura de pantalla 2024-05-04 a la(s) 8 15 34 a m](https://private-user-images.githubusercontent.com/115488250/327956704-c5b6fb73-a44e-48d6-9ac3-f7789e6e2ff5.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJnaXRodWIuY29tIiwiYXVkIjoicmF3LmdpdGh1YnVzZXJjb250ZW50LmNvbSIsImtleSI6ImtleTUiLCJleHAiOjE3MjA2ODM3OTMsIm5iZiI6MTcyMDY4MzQ5MywicGF0aCI6Ii8xMTU0ODgyNTAvMzI3OTU2NzA0LWM1YjZmYjczLWE0NGUtNDhkNi05YWMzLWY3Nzg5ZTZlMmZmNS5wbmc_WC1BbXotQWxnb3JpdGhtPUFXUzQtSE1BQy1TSEEyNTYmWC1BbXotQ3JlZGVudGlhbD1BS0lBVkNPRFlMU0E1M1BRSzRaQSUyRjIwMjQwNzExJTJGdXMtZWFzdC0xJTJGczMlMkZhd3M0X3JlcXVlc3QmWC1BbXotRGF0ZT0yMDI0MDcxMVQwNzM4MTNaJlgtQW16LUV4cGlyZXM9MzAwJlgtQW16LVNpZ25hdHVyZT1mMjQ2NDJmODVjYTU4MDlmYmFmYjU0NWU0ZmM5NTQwNDNjN2M3NTJmN2ZmOGIwZTRkOTRhNDJkYmU4MTliOTgzJlgtQW16LVNpZ25lZEhlYWRlcnM9aG9zdCZhY3Rvcl9pZD0wJmtleV9pZD0wJnJlcG9faWQ9MCJ9.xzuPdrxS74by2hAU39CYKLrv2Buv4Xoi7_E02RjwF38)
Average time: 0.012s