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 Notice: This page contains information for the legacy Phidget21 Library. Phidget21 is out of support. Bugfixes may be considered on a case by case basis. Phidget21 does not support VINT Phidgets, or new USB Phidgets released after 2020. We maintain a selection of legacy devices for sale that are supported in Phidget21. We recommend that new projects be developed against the Phidget22 Library. 
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MediaWiki:Apihelp-main-param-smaxage
From Phidgets Legacy Support
																
																								Set the s-maxage HTTP cache control header to this many seconds. Errors are never cached.