What is SKIP LOCKED for in PostgreSQL?

SKIP LOCKED lets you write queues.<p>It’s also available in MySQL and SQL Server.<p>I wrote a “simpler than SQS” http based queue in Python using SKIP LOCKED.<p><a href="https:&#x2F;&#x2F;github.com&#x2F;starqueue&#x2F;starqueue">https:&#x2F;&#x2F;github.com&#x2F;starqueue&#x2F;starqueue</a>