-| Field | Description | Type | Null | Key | Default | Extra |
-|---------|------------------|--------------|------|-----|---------------------|----------------|
-| id | sequential ID | int(11) | NO | PRI | NULL | auto_increment |
-| name | | varchar(128) | NO | | | |
-| locked | | tinyint(1) | NO | | 0 | |
-| created | | datetime | YES | | 0001-01-01 00:00:00 | |
+
+
+Fields
+------
+
+| Field | Description | Type | Null | Key | Default | Extra |
+| ------- | ---------------------------- | ------------ | ---- | --- | ------------------- | -------------- |
+| id | sequential ID | int unsigned | NO | PRI | NULL | auto_increment |
+| name | | varchar(128) | NO | | | |
+| locked | | boolean | NO | | 0 | |
+| pid | Process ID | int unsigned | NO | | 0 | |
+| expires | datetime of cache expiration | datetime | NO | | 0001-01-01 00:00:00 | |
+
+Indexes
+------------
+
+| Name | Fields |
+| ------------ | ------------- |
+| PRIMARY | id |
+| name_expires | name, expires |
+