race condition when using single connection from processes?

[gigi888]

Hello,

We've just upgraded our redis to 6.x and get lettuce catch up to 6.1.5. Our use case scenario uses single connection to connect to lettuce from AWS lambda. I am wondering if there can be race condition if two lambdas are modifying the same key at approximately the same time. To help elaborate the situation, we start a transaction and write set of strings for the key

Thank you for any hints/suggestions/confirmation/ideas