To increase throughput, you may run multiple instances of the same function. The messages from the input topic will be distributed round-robin to the instances (using a shared subscription).
You can stop, start, and restart running function instances. If a function is not behaving correctly, restarting it make fix it.

Stopping all instances
To stop all running function instances:
- From the left sidebar menu, select Functions/Manage.
- Find the function you would like to update. You can filter the listed functions by name, runtime, and namespace. Once you find the function, click on the Manage button.
- You should now see the details of the function. Click on the Instances tab.
- Click on the Stop All button.
Starting all instances
To start all stopped function instances:
- From the left sidebar menu, select Functions/Manage.
- Find the function you would like to update. You can filter the listed functions by name, runtime, and namespace. Once you find the function, click on the Manage button.
- You should now see the details of the function. Click on the Instances tab.
- Click on the Start All button.
Restarting all instances
To stop then start all running function instances:
- From the left sidebar menu, select Functions/Manage.
- Find the function you would like to update. You can filter the listed functions by name, runtime, and namespace. Once you find the function, click on the Manage button.
- You should now see the details of the function. Click on the Instances tab.
- Click on the Restart All button.
Stopping One Function Instance
To stop a single running function instance:
- From the left sidebar menu, select Functions/Manage.
- Find the function you would like to update. You can filter the listed functions by name, runtime, and namespace. Once you find the function, click on the Manage button.
- You should now see the details of the function. Click on the Instances tab.
- Find the row in the table of the instance you want to stop.
- Click on the Stop button in that row.
Starting One Function Instance
To start a single stopped function instance:
- From the left sidebar menu, select Functions/Manage.
- Find the function you would like to update. You can filter the listed functions by name, runtime, and namespace. Once you find the function, click on the Manage button.
- You should now see the details of the function. Click on the Instances tab.
- Find the row in the table of the instance you want to start.
- Click on the Start button in that row.
Restarting One Function Instance
To stop then start a single running function instance:
- From the left sidebar menu, select Functions/Manage.
- Find the function you would like to update. You can filter the listed functions by name, runtime, and namespace. Once you find the function, click on the Manage button.
- You should now see the details of the function. Click on the Instances tab.
- Find the row in the table of the instance you want to restart.
- Click on the Restart button in that row.