How to degrade gracefully when Redis is unavailable?

If Redis is not available, you may consider the following options for handling degradation:

1. Consider switching to other caching technologies, such as Memcached, instead of Redis if you are using caching. While it may not be as powerful or versatile as Redis, Memcached can still offer basic caching capabilities.
2. Utilizing a database: If Redis is being used to store data or for certain functionalities, you may want to consider storing the data in a database and using database queries to achieve the same functionalities. While this could potentially lead to a decrease in performance, at least you can maintain the basic functionalities of the application.
3. Utilize local memory: If you simply need a basic memory storage, consider using the application’s local memory to store data. This approach may not be suitable for distributed applications, as each application instance will have its own local memory copy.
4. Reduce the functionality of the application: If Redis is used for implementing certain advanced features or services, you can consider temporarily disabling these features and reducing the functionality of the application. This way, although you may lose some functionalities, at least you can maintain the basic functionality of the application.

Regardless of which method of degradation handling you choose, you should fix the issue as soon as Redis is back to normal and restore the application to its normal state.