generic-db-observer
| Crates.io | generic-db-observer |
| lib.rs | generic-db-observer |
| version | 0.3.1 |
| created_at | 2024-03-15 21:51:35.253829+00 |
| updated_at | 2024-03-22 19:04:32.904268+00 |
| description | A generic observer that monitors a database for changes and triggers a change in some Event Subject. |
| homepage | https://gitlab.com/winterberry/generic-db-observer |
| repository | https://gitlab.com/winterberry/generic-db-observer |
| max_upload_size | |
| id | 1175188 |
| size | 19,661 |
(snowpoke)
documentation
README
generic-db-observer
A generic observer that monitors a database for changes (currently only Redis is supported) and then triggers a change in some Event Subject.
To create a program based on this library, you need to implement EventSubject, and then run the function ObserverConfig::run_observer.
Limitations:
- Redis PubSub doesn't actually tell us which channels are added or left, instead we receive a notification that "something has changed", and then we have to load the entire set of tracked channels and compare it with which channels are currently joined. This probably causes quite a performance hit.
- The Event Subject connection is expected to be blocking, whereas the Database connection is expected to be async.