Re: relation btw LWTs and RF

2020-06-25 Thread Erick Ramirez
You are correct. Lightweight transactions perform a read-before-write [1]. The read phase is performed with a serial consistency which requires a quorum of nodes in the local DC (LOCAL_SERIAL) or across the whole cluster ( SERIAL) [2]. Quorum of 2 nodes is 2 nodes so RF=2 cannot tolerate a node ou

Re: relation btw LWTs and RF

2020-06-25 Thread Attila Wind
Ah yeah forgot to mention - I am using Cassandra 4.0-alpha4 Attila Wind http://www.linkedin.com/in/attilaw Mobile: +49 176 43556932 26.06.2020 08:06 keltezéssel, Attila Wind írta: Hey guys, Recently I ran into an interesting situation (by trying to add optimistic locking strategy to one of

relation btw LWTs and RF

2020-06-25 Thread Attila Wind
Hey guys, Recently I ran into an interesting situation (by trying to add optimistic locking strategy to one of the tables) Which lead me eventually to the following observation. Can you confirm (or argue) this is correct when I am saying: "It is not possible to use conditional queries with Re

Re: Encryption at rest

2020-06-25 Thread Reid Pinchback
If you’re using AWS with EBS then you can just handle that with KMS to encrypt the volumes. If you’re using local storage on EC2, or you aren’t on AWS, then you’ll have to do heavier lifting with luks and dm-crypt, or eCryptfs, etc. If you’re using a container mechanism for your C* deployments