replication

Selecting the replication resource will display a list of available downstream replication instances used by this instance of AMPS.

Selecting an individual replication instance will display the following statistics:

Metric

Description

Type

authenticated_id

The ID used to authenticate this connection.

fixed

bytes_out

Number of bytes sent to this destination.

cumulative

bytes_out_per_sec

Rate of bytes sent.

interval average

client_name

The client name used for this destination.

fixed

client_type

Specifies whether client is a replication source or destination.

fixed

connect_time

Time connected to this destination.

snapshot

destination_admin_addr

The admin address of the destination.

fixed

destination_group_name

The group name of the destination.

fixed

destination_name

The name of the destination.

fixed

disconnect_count

Number of times replication destination has been disconnected.

cumulative

disconnect_time

Timestamp of the last time the replication destination disconnected.

snapshot

is_connected

Boolean telling whether replication destination is currently connected.

snapshot

messages_out

Number of messages sent to this destination.

cumulative

messages_out_per_sec

Rate of messages sent to this destination.

interval average

name

Name of replication configuration.

fixed

pass_through

Boolean stating whether messages received via replication can be forwarded on this connection.

fixed

replication_type

One of either sync or async.

snapshot

seconds_behind

The current point in the transaction log that has been acknowledged by this destination.

This is calculated as the difference in seconds between the time that the last message acknowledged by the destination was written to the transaction log and the time that the most recent transaction was processed.

That is, if the last message that the destination has acknowledged was written to the local transaction log at 12:00:01.100 (one second and 100 ms after 12:00) and the current time is 12:00:03.212, the seconds behind shown in the current statistics would be approximately 2.112. Acknowledgements are transmitted at a specific interval (1s by default) from the destination instance to the source instance.

AMPS rounds any value below 1 to 0.

snapshot

Statistics Database Tables: IREPLICATIONS_STATIC, IREPLICATIONS_DYNAMIC

Admin Path: /amps/instance/replication/<identifier>/<metric>

The replication resource also provides options for managing replication instances. The following management functions are available:

Element

Description

downgrade

Change the replication type of this connection from sync to async.

reconnect

Close and reopen the connection to the remote instance.

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