grichards

Client A and Client B refer to 2 different machines running the SI 5.5 client software.

1) open a product through MMPD on Client A
2) edit Cost fields
3) save product
4) synchronize Client A
5) open same product through MMPD on Client B
6) edit Cost fields
7) save product
8) synchronize Client B

What i would expect to happen:
Client B shows the product in Conflict Resolution (because the product has changed since Client B's last sync).

what happens instead:
LanSync allows ClientB to write to server overwriting the change from ClientA

NareshN

Richards,

The issue here is how we define a conflict.

In our implementation we track the UTC time a record is updated and the one with the latest UTC time "wins".

A conflict happens if a record is uploaded to server and record exists on server with a UTCUpdateTime on server greater than record being uploaded.

So basically conflict can happen as follows -
1. User A updates Product A at 11AM but does not sync.
2. User B updates Product B at 11:15AM and syncs.
3. Server now has a record with Product A with update date time = 11:15AM (from User B)
4. User A syncs at 11:30AM - code finds a record for product A with update date time = 11:15. However User A has updated at 11AM - this triggers a conflict.

In the LANSync implemenation it is basically the UTCUpdateDateTime which trigers the conflict - it it is more than server record - server record gets updated or we get a conflict.

grichards

NareshN,

to clarify, since its a delicate explanation and accuracy matters:

Originally Posted by NareshN

...conflict can happen as follows - 1. User A updates Product A at 11AM but does not sync. 2. User B updates Product B at 11:15AM and syncs.

do you mean:
2. User B updates Product A at 11:15AM and syncs.

??

thanks for the explanation of how dTools defines conflicts: Latest data wins.
and thanks for your recent responses to a number of other items that i had posted about.

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NareshN

Richards,

You are right - it should be Product A.

Naresh