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Dondeti Brahma Reddy (Salesforce Analyst en Egnyte) preguntó en Official: Change Data Capture
5 sept 2022, 12:51
CDC Event difference Delivered and Published

Hi Everyone,

 

Recently, we enabled the Change Data capture in my Org, i observed the there is difference in no of change events delivered & Published,

 

Today i made 2 accouts update then events published 2 times but when the event Delivered showing as 10 times. 

Also, its only for infomatica team which subscribe the events and they receivd 2 events only. 

 

Is it possible to check where the remiaing 8 events are delivered? i m very new to the CDC and struguling to understand the CDC functioning & limitations too.

 

Could you pelase any one help on this much approciated.

  #Platform-events #CDC Messages @Salesforce Flow Automation #CDC Support #CDC Guarantee Order @Jay Hurst @John Brock

4 respuestas
  1. Dondeti Brahma Reddy (Egnyte)
    6 sept 2022, 06:22

    Thank you @Benazir Beham 

     

    I queried the it but its returning the 0 results.

     

    Also, please correct me if any issue in my cdc config.

     

    1. enabled the change data captature for 2 obejct  (Account , Opportunity)

    2. In Informatica, they subscribed the these 2 objects and receiving the changeevent but in my system its showing delivered events more than published.

    @Official: Change Data Capture @* Salesforce Platform * @Jay Hurst  

    @John Brock

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Robin Singh (Google) publicó en Official: Change Data Capture
7 abr 2020, 01:48

Some CDC messages seem to be delivered with significant latency [O(minutes)] and/or out of order (with regards to commit timestamp but in correct order w.r.t. replay id).

 

This seems to happen for large commits with spread out over 50+ messages.

 

Is this expected? Any way we can handle this on our end?

11 comentarios
  1. Jay Hurst (Salesforce)
    16 abr 2020, 21:02

    We do not document an SLA here, as it is really based on the customer and what they are doing. The p99 is the experience that we have seen on a general day to day basis.

    I can say that CDC is slightly slower than PE (since there is more logic in the capture and the flush to the event bus happens after the entire commit, where Platform Events is a direct publish). CDC is similar to OBMM in terms of having to wait until after the commit, though since we make outbound calls with OBMM, it is really on a regular cycle that batches up messages with OBMM, as opposed to per event

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Robin Singh (Google) publicó en Official: Change Data Capture
7 abr 2020, 01:45

How do we get SystemModstamp in CDC Messages.

 

We're slowly migrating from OBM to CDC, we have a lot of logic around SystemModStamp when processing objects. CDC doesn't seem to include this field in payloads.

 

Can this be assumed to be same as CommitTimestamp?

Last modified date doesn't seem good enough, so what else should we consider?

6 comentarios
  1. Robin Singh (Google)
    7 abr 2020, 22:42

    Thanks. That's a pretty clear explanation.

    We'll use commit timestamp as if it were SystemModstamp.

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