Methods to Correct HTTP Error 429 - Too Many Requests
Question
During the data migration testing, you are getting an HTTP error 429 - Too many requests.
Please select three methods you can use to correct this problem.
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D. E.Correct Answers: B, D and.
E.
As a Solution Architect, you need to ensure that Web APIs calls during the data migration process would not hit the API service limits.
The API service limits protect the Dataverse service performance and availability.
For example, if some users send an extraordinary amount of requests that can affect the other users' operations, the Dataverse limits such a demand for its services.
The Dataverse service protection API limits are enforced per web server and user.
They are based on three measures: Number of requests - the number of requests sent by a user.
The limit is 6000 requests within the 5-minute sliding window.
Execution time - the combined time for all requests sent by a user.
The limit is 20 minutes within the 5-minute sliding window.
Number of concurrent requests - the number of simultaneous requests made by a user.
The limit is 52 requests.
The Dataverse applies all these measures in combination.
If you got an HTTP error 429 - Too many requests and a Retry-After header with a number of delay seconds, you have an API service limits problem during the data migration testing.
You can resolve this problem using the following approaches: Use multiple threads - you can increase the number of threads in your migration tool or use Task Parallel Library with the Web API client.
Minimize API calls - your migration tool should work with Retry-After values to tune the maximum allowed number of Web API calls.
You can use .Net code to capture the 429 error and adjust the number of calls in your client library.
Avoid batching - you need to use batches only when you have a transaction type data batch performed on the tables not associated with other tables.
In all other cases, keep your calls small as possible to neglect the network latency.
Option A is incorrect because using the classic flows will not help you avoid API service limits.
Option C is incorrect because Microsoft does not allow to increase service protection limits.
For more information about the data migration troubleshooting, please visit the below URLs:
When performing data migration testing, it's common to encounter errors like HTTP error 429 - Too many requests. This error typically occurs when a user exceeds the service's request limit. In this scenario, you can take several actions to correct the problem, as follows:
Increase Service Protection Limits: This is a possible solution to HTTP error 429. Increasing service protection limits will increase the maximum number of requests you can make to a service within a specified period. This could be done through the Azure portal or other methods depending on the specific service being used. However, it is important to note that increasing the limits may result in increased costs and could also affect the performance of other applications running on the same service.
Use Multiple Threads: Another solution to HTTP error 429 is to use multiple threads. This technique involves breaking down the migration process into smaller parts and processing them concurrently. By doing this, you can distribute the requests across different threads, which can help reduce the number of requests being made per thread. However, this approach requires careful consideration of the service's capabilities and could impact the overall performance of the migration process.
Minimize API Calls: One common cause of HTTP error 429 is the excessive use of APIs. To solve this issue, you could minimize the number of API calls being made. This can be achieved by optimizing the data migration process to use bulk operations or using batch processing techniques.
Avoid Batching: Batching is a common technique used in data migration to group related items into a single batch for processing. However, this technique can also contribute to HTTP error 429 by increasing the number of requests made to a service within a specified period. One way to solve this issue is to avoid batching altogether and process data one item at a time. Although this may impact the overall performance of the migration process, it could help to reduce the number of requests being made to a service.
Use Classic Flow: Classic flows are a type of workflow that can be used to automate business processes within an organization. Although they are less powerful than the newer Power Automate flows, they can still be useful in situations where you need to automate a simple process. In this scenario, using classic flow may not be directly related to solving the HTTP error 429, but it could be an alternative way to achieve the same goal without hitting the same limitations of the service.
In conclusion, to correct HTTP error 429 during data migration testing, you could use one or more of the above methods. It's important to carefully consider the options available and their potential impact on the migration process before making any changes.
