Table push_subscriber
===========

Used for OStatus: Contains feed subscribers

Fields
------

| Field        | Description                       | Type               | Null | Key | Default             | Extra          |
| ------------ | --------------------------------- | ------------------ | ---- | --- | ------------------- | -------------- |
| id           | sequential ID                     | int unsigned       | NO   | PRI | NULL                | auto_increment |
| uid          | User id                           | mediumint unsigned | NO   |     | 0                   |                |
| callback_url |                                   | varchar(255)       | NO   |     |                     |                |
| topic        |                                   | varchar(255)       | NO   |     |                     |                |
| nickname     |                                   | varchar(255)       | NO   |     |                     |                |
| push         | Retrial counter                   | tinyint            | NO   |     | 0                   |                |
| last_update  | Date of last successful trial     | datetime           | NO   |     | 0001-01-01 00:00:00 |                |
| next_try     | Next retrial date                 | datetime           | NO   |     | 0001-01-01 00:00:00 |                |
| renewed      | Date of last subscription renewal | datetime           | NO   |     | 0001-01-01 00:00:00 |                |
| secret       |                                   | varchar(255)       | NO   |     |                     |                |

Indexes
------------

| Name     | Fields   |
| -------- | -------- |
| PRIMARY  | id       |
| next_try | next_try |
| uid      | uid      |

Foreign Keys
------------

| Field | Target Table | Target Field |
|-------|--------------|--------------|
| uid | [user](help/database/db_user) | uid |

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