What is the limit on the maximum number of concurrent requests using the DSS API
I have read in the best practice guide for DSS that an application will receive a 429 error if it makes too many requests. However, I cannot find any stated limit on the number of request that an application can have concurrently with the DSS API using a single user id. Is this limit known?
@mark.ringrose, see attached dss-12-0-release-notes-apr2018.zip.
Here is the relevant extract:
In order to support consistent performance and optimize response times for the most users, DataScope Select now applies request execution limits and queuing on a per-template basis, which allows for more granular resource balancing. This is applied across all product interfaces: GUI, REST API, SOAP API, and FTP. The limits are:
50 concurrent requests per user per template, for each of the following templates:
- Commodities Corrections History
- Fund Allocation
- News Analytics
- News Analytics Commodities
- News Items
- Ownership
- StarMine
500 concurrent requests per user for the Intraday Pricing template.
If you reach the per-user limit on the number of extraction requests for that template, any additional extraction requests that you submit against that template will fail, with the extraction notes explaining why. (If submitted via the REST or SOAP API, it will also return status 429.)
In future releases, additional templates will support template-specific execution limits.
Hello @mark.ringrose,
It's been upgraded fairly recently, and for the majority of custom requests it's 50.
Please see the detailed overview Product Change Notification: New Processing Limits For Better Performance
That answer is for Tick History Requests via DSS.
Do we know the limit for Legal Entity Data?
Hi Christiaan,
I went through the Best Practices and limits documentation.
it is clear that the limit of concurrent requests for the below reports is 50. But how to find out for the limit number for the most used report such as intraday pricing, End of day pricing, or Terms and Conditions?
thanks and regards
Ludovic
50 concurrent requests per user per template, for each of the following templates:
- Commodities Corrections History
- Fund Allocation
- News Analytics
- News Analytics Commodities
- News Items
- Ownership
- StarMine
As stated in the accepted response, for Intraday it is 500 concurrent requests; this is mentioned in the DSS 12.0 Release Notes (RN).
For Price history it is 50 (since version 13.1), as stated in the DSS 13.1 RN on page 12.
I could not find the info for EoD and T&C, I'll investigate that and come back when I have a response.
@ludovic.mesnier,@Christiaan Meihsl
Currently, Maximum Requests with Extractions or On Demand EOD or T&C would be 800 (time period 60 seconds). Thank you