Key/Value Maps

Programs can use maps to store key/value pairs in a persistence store.

A map behaves like a simple database table with two columns: key and value. The key is a string, and the value is a message.

Programs assign a name to each map. A store may contain many maps, each with a unique name.

API methods can do these operations:
  • Create a map.
  • Set a key/value pair.
  • Get a key's value.
  • Remove a key/value pair.
  • Iterate over all the key/value pairs in a map.
  • Close a map object.
  • Delete a map from the store.

In addition, most of these methods are available as locked operations. That is, you can use a lock to ensure that map operations in different processes do not interfere with one another (see Locks).

In order for a program to use maps, administrators must enable dynamic last-value durables in a persistence store. For more information, see “Enabling Key/Value Maps” in TIBCO FTL Administration.