fine tuning for wide rows and mixed worload system

Hello everyone, I need some advise in order to solve my use case problem. I have already tried some solutions but it didn't work out. Can you help me with the following configuration please? any help is very appreciate I'm using: - Cassandra 3.11.3 - java version "1.8.0_191" My use case is compo

RE: [EXTERNAL] fine tuning for wide rows and mixed worload system

I will start – knowing that others will have additional help/questions. What heap size are you using? Sounds like you are using the CMS garbage collector. That takes some arcane knowledge and lots of testing to tune. I would start with G1 and using ½ the available RAM as the heap size. I would

Re: [EXTERNAL] fine tuning for wide rows and mixed worload system

Hi Sean, > I will start – knowing that others will have additional help/questions I hope that, I really need help with this :) > What heap size are you using? Sounds like you are using the CMS garbage collector. Yes, I'm using CMS garbage Collector. I have not used G1 because I read it isn't rec

Modeling Time Series data

Hi, I have a data model where the partition key for a lot of tables is based on time (year, month, day, hour) Would this create a hotspot in my cluster, given all the writes/reads would go to the same node for a given hour? Or does the cassandra storage engine also takes into account the table in

Re: Modeling Time Series data

Hi Akash, There are a lot of interesting articles written around this topic. - http://thelastpickle.com/blog/2017/08/02/time-series-data-modeling-massive-scale.html - https://medium.com/netflix-techblog/scaling-time-series-data-storage-part-i-ec2b6d44ba39 You shouldn't need t

Re: Modeling Time Series data

Hello Akash! For Time Series, I'd make two recommendations: - Check out at KairosDB . Works on Cassandra as well as Scylla; they've been around for a while, and Brian Hawkins has spoken a great deal on KairosDB, both at Scylla Summit 2017

Deployment

I am new to Cassandra, i am wondering how the Cassandra applications are deployed in the cloud. Does Cassandra have a client server architecture and the application is deployed as a 3rd tier that sends over queries to the clients, which then submit them to the Cassandra servers?  Or does the app

Re: Deployment

In the cloud world all the Apps and servers are deployed independently. Having said that application has to submit request to post or get the data it’s the Cassandra takes care of routing it internally to get the data. Yes it’s better to have on same cloud for better performance. Hope you got some