Option	Used By	Used For
g	Spring Session	Spring Session uses this setting, among other things, to detect when an HTTP session is manually deleted.
$	Blueriq	Blueriq uses this for concurrency control on multiple runtimes.
x	Spring Session	Spring Session uses this setting to detect when an HTTP session expires.
K	Blueriq	Blueriq uses keyspace notifications. That is, it can detect operations on a specific key or set of keys which match a pattern. This is used for concurrency control on multiple runtimes.
E	Spring Session	Spring Session uses keyevent notifications. That is, it can detect keys affected by a specific operationsoperation.

Interruptible Sessions and Flows

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