private long hashBlob(byte[] bytes) {
        return XXHashFactory.fastestInstance().hash64().hash(bytes, 0, bytes.length, 0);
    }
OID for 'name' of foo.jpeg will be in format: <samp>44cf-a164-607dd7fcd820/foo.jpeg</samp>.
manager/api/jpa/src/main/java/io/apiman/manager/api/jpa/blobstore/SqlBlobStoreService.java