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Dynamics 365 - Slow response from Rest API

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Posted on by Address

Hi Guys,

Our application is using MSD as a back-end and front-end is in Angular. We're using Rest APIs to manage CRUD operation in MSD.

Recently, we're facing slowness randomly in API responses. APIs like, /api/data/v9.0/WhoAmI() - took 10+ seconds, api/data/v9.0/transactioncurrencies took 5 seconds. one of custom entities containing only 3 records took 5-6 seconds. This is not happening consistently - it's a random behavior but creates issue while loading our application i.e. one call doesn't return response and blocks rest.

Read a couple of docs but I couldn't find the way to trace the API requests. Security is not complex - just 2 level setup.

Can someone help me, how do I know the root cause of this slowness? Can someone guide me how to trace request or measure performance etc.

Thanks in advance!

Regards,

Niyati

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bondlela 88 on at

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Dynamics 365 - Slow response from Rest API

We see a similar issue with our API Rest calls to D365 finance and operations. We are cloud-hosted. Any suggestions on how to resolve this issue?
Goutham A on at

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RE: Dynamics 365 - Slow response from Rest API

Hi Niyati, did you get this resolved?

We are facing similar issues when for some instances a particular call(say retrieve system users) is taking more time(>7 seconds) but this usually completes in 300 milliseconds(for most calls). I could not understand why only some API calls are taking more execution time intermittently
Community Member on at

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RE: Dynamics 365 - Slow response from Rest API

The symptoms you are describing suggest that you are doing the calls synchronously? If that's the case, one call will block anything after it and cause the UI to freeze and show that warning. Can you please check on that?
Address 31 on at

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RE: Dynamics 365 - Slow response from Rest API

Thanks Omar for the response.

Our MSD instance is online CRM. Slowness appear in the application, so this is how API calls are executed:

/WhoAmI()

/custom_entity1

/usersettingscollection

/transactioncurrencies

/custom_entity2

/custom_entity3

/custom_entity4

/uoms

/custom_entity5

/custom_entity6

/privileges

(Custom entities mentioned here have less than 10 data)

Randomly one of API calls get stuck somehow, which shows status "Pending" and blocks other calls. Sometimes API call doesn't return and browser shows warning of non-response like "Exit" or "Cancel".

Hope this helps.

Regards,

Niyati
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Community Member on at

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RE: Dynamics 365 - Slow response from Rest API

Hi,

Is this system that exposes the API's online or on-premise? does the slowness appear on the system itself or just the API's?