Method, system, and storage medium for dynamically reordering resource participation in two-phase commit to heuristically optimize for last-agent optimization

A system for last-agent optimization, comprising:

• an application server running on a general-purpose computer;
• a container hosted on the server;
• at least one application running in the container, the application including at least one transaction using a plurality of resources;
• a transaction manager on the server for heuristically ordering the resources during a commit phase of a two-phase commit process to achieve last-agent optimization;
• and
• a connection manager on the server for supplying the resources to the application and for enlisting the resources with the transaction manager.

A storage medium storing instructions for performing a method for last-agent optimization, comprising:

• storing usage statistics in a histogram;
• ordering a plurality of resources in a current transactional context using the histogram to achieve last-agent optimization;
• and
• adjusting the ordering autonomically to changes in usage.