Storing Messages Received While EMS Is Offline

ThingWorx Edge MicroServer (EMS) > Additional Configuration of EMS > Storing Messages Received While EMS Is Offline

The offline_msg_store group is used to configure how the EMS handles and stores messages that are received while it is offline.

The following example shows the default configuration. If you do not want to use it, you do not have to change the configuration. When this feature is disabled, the other settings are ignored. However, if you do want to use this store, make sure you set the enabled property to true and add the appropriate directory for storing messages. Depending on the space available on your system, you may also want to change the max_size property.

"offline_msg_store": {
"enabled": true,
"directory" : "./offline_message_store",
"max_size": 65535
},

The following table describes the properties for storing messages that are received while the EMS is offline; it also provides the default values:

Property	Description
enabled	Whether or not the store is enabled. The default setting of true enables offline message store. Set this property to false to disable it.
directory	The path to the directory of the store where messages are stored. The default value is "/path/to/offline/message/store/directory". Here is an example: directory: "/opt/thingworx" where "/opt/thingworx" is the directory where the EMS executable is installed (Linux).
max_size	The maximum size (in bytes) of the directory where messages are stored. The default value is 65535 bytes.