static-web-resources Section

browserHardCacheDuration

Default value: 0
Valid Values: Positive integer or zero
Changes take effect: Immediately
Specifies the duration in seconds of hard caching for Co-browse static resources like JavaScript and CSS files. If the value is 0, hard caching is not applied (the headers are not set).

Note that setting a hard cache duration above 0 may lead to problems when upgrading Co-browse. If a browser uses a cached version of JavaScript not compatible with the upgraded server, Co-browse may not function properly until the cache duration expires.