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+# Cookbook
+
+### Updating an Existing Entity
+
+1. Fetch (GET) the existing entity
+2. Create (POST) a new editgroup
+3. Update (PUT) the entity, with the current revision number in the `prev` edit
+   field, and the editgroup id set
+4. Submit (POST? TBD) the editgroup for review
+
+### Merging Duplicate Entities
+
+1. Fetch (GET) both entities
+2. Decide which will be the "primary" entity (the other will redirect to it)
+3. Create (POST) a new editgroup
+4. Update (PUT) the "primary" entity with any updated metadata merged from the
+   other entity (optional), and the editgroup id set
+5. Update (PUT) the "other" entity with the redirect flag set to the primary's
+   identifier, with the current revision id (of the "other" entity) in the
+   `prev` field, and the editgroup id set
+4. Submit (POST? TBD) the editgroup for review
+
+### Lookup Fulltext URLs by DOI
+
+1. Use release lookup endpoint (GET) with the DOI a query parameter, with
+   `expand=files`
+2. If a release hit is found, iterate over the linked `file` entities, and
+   create a ranked list of URLs based on mimetype, URL "rel" type, file size,
+   or host domain.
+
+### Batch Insert New Entities (Bootstrapping)
+
+When bootstrapping a blank catalog, we need to insert 10s or 100s of millions
+of entities as fast as possible.
+
+1. Create (POST) a new editgroup, with progeny information included
+2. Batch create (POST) entities