Stores
The Stores tab provides an overview of persisted messages and disk usage. There are two similar but distinct store tabs based on the backing storage type of the EMS server group. Each server group uses only one storage type, so you always see that store tab for the server you are viewing.
Both variants have a graph that displays the current message distribution by byte size among the top few stores.
FTL Stores
This is the only option for Kubernetes-provisioned EMS capabilities. The Control Tower data plane servers can also use FTL stores.
Disk usage percent: This is the disk usage percentage of the system where FTL is storing message data.
Sorting Stores by Columns
You can sort stores by clicking the arrows on a column heading.
These columns are described in the following table:
| Column | Description |
|---|---|
| Name | The name of the store. |
| Inbound Rate | Byte rate per second into the FTL store. |
| Outbound Rate | Byte rate per second out from the FTL store. |
| Messages Size | Total byte size of the messages saved in the FTL store. |
| Messages | Total number of messages saved in this FTL store. |
| Inbound Msgs/s | The number of inbound messages per second in the most recent rate interval. |
| Outbound Msgs/s | The number of outbound messages per second in the most recent rate interval. |
FTL stores automatically compact message data; there is no action to manually compact a store.
File Stores
This is the default EMS store type and is only seen for Control Tower data plane server groups.
File stores display an extra chart showing the disk read and write rates over time. File stores display metrics for the total size of all the EMS store files on disk, as well as the system disk usage of the active EMS server.
File stores do not automatically compact but can be manually compacted by using the action menu in the table.
Sorting Stores by Columns
You can sort stores by clicking the arrows on a column heading.
These columns are described in the following table:
| Column | Description |
|---|---|
| Name | The name of the store. |
| Write Rate | Number of bytes per second written to the store file in the last monitor interval. |
| Used Space | The amount of space used by messages. |
| Free Space | The amount of space in the store file not used by messages |
| Frag. % | The stores file fragmentation percentage. Can be addressed with Compact action. |
| Messages | Total number of messages saved in the store. |