Singleton Azure function running as separate instances
We have an Azure function that is supposed to be handling several service bus triggers at the same time and what I assume is happening is that it is being split across several instances which is causing some concurrency problems on our end.
We need our function to act as a singleton so we can process requests one at a time without any collisions. From what we looked into in this article (https://docs.microsoft.com/en-us/azure/app-service/webjobs-sdk-how-to#singleton-attribute) we should be able to accomplish this.
Our function looks like this:
[Microsoft.Azure.WebJobs.Singleton(Mode = SingletonMode.Listener)]
[FunctionName("AccountCreatedSubscriber")]
public static void Run([ServiceBusTrigger("accountscontacts-account-created", "license-keys", Connection = "FBISEventBus")]BrokeredMessage message, ILogger log)
{
log.LogInformation($"{{ Message received from accountscontacts-account-created topic }}");
// Do Work
log.LogInformation($"{{ Message sent to account creation handler }}");
}
And for backup we also have this in our host.json file,
{
"serviceBus": { "maxConcurrentCalls": 1 }
}
But for whatever reason our functions are still running parallel. Any ideas?
c#
azure concurrency azure-functions edited Jan 2 at 6:29
marc_s
580k13011181266
asked Jan 2 at 4:20
tokyo0709tokyo0709
6632920
add a comment |
We have an Azure function that is supposed to be handling several service bus triggers at the same time and what I assume is happening is that it is being split across several instances which is causing some concurrency problems on our end.
We need our function to act as a singleton so we can process requests one at a time without any collisions. From what we looked into in this article (https://docs.microsoft.com/en-us/azure/app-service/webjobs-sdk-how-to#singleton-attribute) we should be able to accomplish this.
Our function looks like this:
[Microsoft.Azure.WebJobs.Singleton(Mode = SingletonMode.Listener)]
[FunctionName("AccountCreatedSubscriber")]
public static void Run([ServiceBusTrigger("accountscontacts-account-created", "license-keys", Connection = "FBISEventBus")]BrokeredMessage message, ILogger log)
{
log.LogInformation($"{{ Message received from accountscontacts-account-created topic }}");
// Do Work
log.LogInformation($"{{ Message sent to account creation handler }}");
}
And for backup we also have this in our host.json file,
{
"serviceBus": { "maxConcurrentCalls": 1 }
}
But for whatever reason our functions are still running parallel. Any ideas?
c#
azure concurrency azure-functions edited Jan 2 at 6:29
marc_s
580k13011181266
asked Jan 2 at 4:20
tokyo0709tokyo0709
6632920
add a comment |
We have an Azure function that is supposed to be handling several service bus triggers at the same time and what I assume is happening is that it is being split across several instances which is causing some concurrency problems on our end.
We need our function to act as a singleton so we can process requests one at a time without any collisions. From what we looked into in this article (https://docs.microsoft.com/en-us/azure/app-service/webjobs-sdk-how-to#singleton-attribute) we should be able to accomplish this.
Our function looks like this:
[Microsoft.Azure.WebJobs.Singleton(Mode = SingletonMode.Listener)]
[FunctionName("AccountCreatedSubscriber")]
public static void Run([ServiceBusTrigger("accountscontacts-account-created", "license-keys", Connection = "FBISEventBus")]BrokeredMessage message, ILogger log)
{
log.LogInformation($"{{ Message received from accountscontacts-account-created topic }}");
// Do Work
log.LogInformation($"{{ Message sent to account creation handler }}");
}
And for backup we also have this in our host.json file,
{
"serviceBus": { "maxConcurrentCalls": 1 }
}
But for whatever reason our functions are still running parallel. Any ideas?
c#
azure concurrency azure-functions edited Jan 2 at 6:29
marc_s
580k13011181266
asked Jan 2 at 4:20
tokyo0709tokyo0709
6632920
We have an Azure function that is supposed to be handling several service bus triggers at the same time and what I assume is happening is that it is being split across several instances which is causing some concurrency problems on our end.
We need our function to act as a singleton so we can process requests one at a time without any collisions. From what we looked into in this article (https://docs.microsoft.com/en-us/azure/app-service/webjobs-sdk-how-to#singleton-attribute) we should be able to accomplish this.
Our function looks like this:
[Microsoft.Azure.WebJobs.Singleton(Mode = SingletonMode.Listener)]
[FunctionName("AccountCreatedSubscriber")]
public static void Run([ServiceBusTrigger("accountscontacts-account-created", "license-keys", Connection = "FBISEventBus")]BrokeredMessage message, ILogger log)
{
log.LogInformation($"{{ Message received from accountscontacts-account-created topic }}");
// Do Work
log.LogInformation($"{{ Message sent to account creation handler }}");
}
And for backup we also have this in our host.json file,
{
"serviceBus": { "maxConcurrentCalls": 1 }
}
But for whatever reason our functions are still running parallel. Any ideas?
c#
azure concurrency azure-functions c#
azure concurrency azure-functions edited Jan 2 at 6:29
marc_s
580k13011181266
asked Jan 2 at 4:20
tokyo0709tokyo0709
6632920
edited Jan 2 at 6:29
marc_s
580k13011181266
asked Jan 2 at 4:20
tokyo0709tokyo0709
6632920
edited Jan 2 at 6:29
marc_s
580k13011181266
edited Jan 2 at 6:29
marc_s
580k13011181266
edited Jan 2 at 6:29
marc_s
580k13011181266
580k13011181266
asked Jan 2 at 4:20
tokyo0709tokyo0709
6632920
asked Jan 2 at 4:20
tokyo0709tokyo0709
6632920
asked Jan 2 at 4:20
tokyo0709tokyo0709
6632920
6632920
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
If your function is on Consumption plan, set
WEBSITE_MAX_DYNAMIC_APPLICATION_SCALE_OUTto1in Application settings.
Check your Azure Function runtime version in portal(Platform features> Function app settings). If it's ~2, we need to modify service bus setting in host.json as below.
{
"version": "2.0",
"extensions": {
"serviceBus": {
"messageHandlerOptions": {
"maxConcurrentCalls": 1
}
}
}
}
answered Jan 2 at 5:23
Jerry LiuJerry Liu
11.3k11232
Sorry, we had tried this at first and I thought it didn't do anything for us but it was a different issue I realized and this did seem to help with some of the concurrency we were dealing with thank you.
– tokyo0709
Jan 8 at 3:59
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
If your function is on Consumption plan, set
WEBSITE_MAX_DYNAMIC_APPLICATION_SCALE_OUTto1in Application settings.
Check your Azure Function runtime version in portal(Platform features> Function app settings). If it's ~2, we need to modify service bus setting in host.json as below.
{
"version": "2.0",
"extensions": {
"serviceBus": {
"messageHandlerOptions": {
"maxConcurrentCalls": 1
}
}
}
}
answered Jan 2 at 5:23
Jerry LiuJerry Liu
11.3k11232
Sorry, we had tried this at first and I thought it didn't do anything for us but it was a different issue I realized and this did seem to help with some of the concurrency we were dealing with thank you.
– tokyo0709
Jan 8 at 3:59
add a comment |
If your function is on Consumption plan, set
WEBSITE_MAX_DYNAMIC_APPLICATION_SCALE_OUTto1in Application settings.
Check your Azure Function runtime version in portal(Platform features> Function app settings). If it's ~2, we need to modify service bus setting in host.json as below.
{
"version": "2.0",
"extensions": {
"serviceBus": {
"messageHandlerOptions": {
"maxConcurrentCalls": 1
}
}
}
}
answered Jan 2 at 5:23
Jerry LiuJerry Liu
11.3k11232
Sorry, we had tried this at first and I thought it didn't do anything for us but it was a different issue I realized and this did seem to help with some of the concurrency we were dealing with thank you.
– tokyo0709
Jan 8 at 3:59
add a comment |
If your function is on Consumption plan, set
WEBSITE_MAX_DYNAMIC_APPLICATION_SCALE_OUTto1in Application settings.
Check your Azure Function runtime version in portal(Platform features> Function app settings). If it's ~2, we need to modify service bus setting in host.json as below.
{
"version": "2.0",
"extensions": {
"serviceBus": {
"messageHandlerOptions": {
"maxConcurrentCalls": 1
}
}
}
}
answered Jan 2 at 5:23
Jerry LiuJerry Liu
11.3k11232
If your function is on Consumption plan, set
WEBSITE_MAX_DYNAMIC_APPLICATION_SCALE_OUTto1in Application settings.
Check your Azure Function runtime version in portal(Platform features> Function app settings). If it's ~2, we need to modify service bus setting in host.json as below.
{
"version": "2.0",
"extensions": {
"serviceBus": {
"messageHandlerOptions": {
"maxConcurrentCalls": 1
}
}
}
}
answered Jan 2 at 5:23
Jerry LiuJerry Liu
11.3k11232
edited Jan 2 at 8:25
answered Jan 2 at 5:23
Jerry LiuJerry Liu
11.3k11232
answered Jan 2 at 5:23
Jerry LiuJerry Liu
11.3k11232
answered Jan 2 at 5:23
Jerry LiuJerry Liu
11.3k11232
11.3k11232
Sorry, we had tried this at first and I thought it didn't do anything for us but it was a different issue I realized and this did seem to help with some of the concurrency we were dealing with thank you.
– tokyo0709
Jan 8 at 3:59
add a comment |
Sorry, we had tried this at first and I thought it didn't do anything for us but it was a different issue I realized and this did seem to help with some of the concurrency we were dealing with thank you.
– tokyo0709
Jan 8 at 3:59
Sorry, we had tried this at first and I thought it didn't do anything for us but it was a different issue I realized and this did seem to help with some of the concurrency we were dealing with thank you.
– tokyo0709
Jan 8 at 3:59
Sorry, we had tried this at first and I thought it didn't do anything for us but it was a different issue I realized and this did seem to help with some of the concurrency we were dealing with thank you.
– tokyo0709
Jan 8 at 3:59
add a comment |
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