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Result storage
thumbor uses a result storage to improve the speed of responding subsequent requests for the same image.
When a request for a given image with a set of parameters arrive, thumbor processes the request and before returning it, asks for the result storage to store it.
The next time the same request arrives, it will get it from the result storage and return it, thus saving a lot of processing.
thumbor comes pre-packaged with a filesystem result storage.
The file system result storage, as the name implies, stores images in the filesystem.
Images are stored in whatever path is specified in the RESULT_STORAGE_FILE_STORAGE_ROOT_PATH
, and consequently retrieved from the same path.
By default, the file system result storage keeps images forever. You are allowed to specify an expiration, though, using the RESULT_STORAGE_EXPIRATION_SECONDS
configuration. Again, as the name implies, it specifies the number of seconds with which files expire.
To use it you should set the RESULT_STORAGE
configuration to 'thumbor.result_storages.file_storage'
.
In order to implement your own result storage, you have to implement a few methods. A reference implementation can be found at the File Storage.
The required methods are put
, get
, validate_path
and normalize_path
.