New Solace scaler for Direct Messaging

[alfonso-chacon]

Proposal

New Solace scaler that provides the ability to scale the number of client instances automatically based upon transient load for shared subscription (message backlog, message rate)

Scaler Source

Message backlog and message rates for consumers that uses shared subscriptions

Scaling Mechanics

Scaler will collect the following metrics from a Solace PubSub+ Event Broker using SEMP:

• D-1 queue message count length-msgs
• Transmission rate to client (bytes) txByteRate
• Transmission rate to client (messages) txMsgRate
• 1-minute average transmission rate to client (bytes) averageTxByteRate
• 1-minute average transmission rate to client (messages) averageTxMsgRate

Metrics collected will be aggregated and compared against a specified desired target

Authentication Source

Solace Basic Auth

Anything else?

No response

[JorTurFer]

Hello
New scaler support is always nice! I have a question, can't this be done with the current solace scaler? If not, can we extend the current scaler to support it?

[alfonso-chacon]

Hi Jorge,

It can't be done with the current Solace Scaler as is a completely different approach. Current scaler is for Guaranteed Messaging, and it monitors a specific queue for its statistics (messages queued, spool used, message/rate) its goal is to prevent messages to build up on a physical queue.

This new Scaler is for Direct Messaging that receive messages using shared subscriptions, the metrics used here are transient (transmitted message rate, transmitted bytes rate, D-1 queue length), all this metrics exists as long as the clients are connected, its goal is to maintain client performance by managing resources in concert with inbound direct message rate using transient metrics