Using Program-to-Program Queues › Understanding PPQs › General Limitations

General Limitations

The number of queues allowed varies from site to site. Two factors to consider when determining a maximum number of queues are:

• The size of a queue item

  The maximum allowable size of any item on any queue is limited to 64 KB.

  Note: If you are writing 128-byte items to a queue, you will not run out of memory as quickly as someone writing 64 KB items.

• The number of items written to a queue

  A queue can contain up to 10,000 items. The default number of items is 100. You determine the maximum number of items allowed in a queue when you create the queue.

  In addition, each queue that you create has a 164-byte overhead (approximately) and each queue item has a 256‑byte overhead (approximately).