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47 lines
1.7 KiB
ReStructuredText
47 lines
1.7 KiB
ReStructuredText
Base class for attachments on external object store
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===================================================
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This is a base addon that regroup common code used by addons targeting specific object store
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Configuration
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-------------
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Object storage may be slow, and for this reason, we want to store
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some files in the database whatever.
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Small images (128, 256) are used in Odoo in list / kanban views. We
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want them to be fast to read.
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They are generally < 50KB (default configuration) so they don't take
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that much space in database, but they'll be read much faster than from
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the object storage.
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The assets (application/javascript, text/css) are stored in database
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as well whatever their size is:
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* a database doesn't have thousands of them
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* of course better for performance
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* better portability of a database: when replicating a production
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instance for dev, the assets are included
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This storage configuration can be modified in the system parameter
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``ir_attachment.storage.force.database``, as a JSON value, for instance::
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{"image/": 51200, "application/javascript": 0, "text/css": 0}
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Where the key is the beginning of the mimetype to configure and the
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value is the limit in size below which attachments are kept in DB.
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0 means no limit.
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Default configuration means:
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* images mimetypes (image/png, image/jpeg, ...) below 50KB are
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stored in database
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* application/javascript are stored in database whatever their size
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* text/css are stored in database whatever their size
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Disable attachment storage I/O
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------------------------------
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Define a environment variable `DISABLE_ATTACHMENT_STORAGE` set to `1`
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This will prevent any kind of exceptions and read/write on storage attachments.
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