2

Is it possible to load balance between multiple Function apps (say 10 of them) on consumption plan in the same region? Each app would have the same source code and can individually be upgraded to prevent downtime. Unfortunately, sometimes I get 503 errors when I deploy changes to a Function app, in which case I have to manually restart the app in the portal. Auto-swap has the same issues. This is not acceptable in a production environment, so I'm thinking of using multiple apps. I looked into using Traffic Manager, but that seems to be suited for a multi-region deployment.

user246392
  • 2,661
  • 11
  • 54
  • 96
  • I agree. MS is famous for overpromising and underdelivering. See https://stackoverflow.com/questions/62767337/azure-function-deployments-cause-brief-503-errors-even-when-auto-swap-is-turned. Working with `Functions` hasn't been the most pleasant experience. – user246392 Jan 08 '21 at 17:21

2 Answers2

1

You can use Traffic Manager also for backends that are all in the same region. However, I would rather recommend to use Azure Front Door as it provides more capabilities and faster failover times.

silent
  • 14,494
  • 4
  • 46
  • 86
  • If I had a Function app deployed in US West, Central, and East and a Cosmos DB in Central, and Front Door in Zone 1, can you help me understand how outbound data transfers are charged? Will I pay for outbound bandwidth 3 times if, say, the data is routed from Central (Cosmos DB) to West (Function) to wherever Zone 1 is located? – user246392 Jan 08 '21 at 11:10
  • Front Door is a global service and pricing depends on where the client is connecting from (those are the Zones 1,2,3) https://azure.microsoft.com/en-us/pricing/details/frontdoor/ Regarding cosmos db: if your Function is deployed in multiple regions, I would recommend to also enable geo replication on cosmos – silent Jan 08 '21 at 11:13
0

you can use the same solution, as Microsoft recommended for HA (totally agree with previous commentator): https://learn.microsoft.com/en-us/azure/azure-functions/functions-geo-disaster-recovery

nobodyfromhell
  • 321
  • 1
  • 10