bigdata OLTP , OLAP
row-based vs col based db or format row based –> good for OLTP ( transcation), e.g: cassendra col based –> good for OLAP (? easy to aggreation etc?), druid Parquet…
grpc deep drive
GRPC client side msg: header, msg, EOS server side msg: header, msg, msg, Trailer over http2 keep live? c++ async or sync? https://grpc.io/docs/languages/cpp/async/ , does it provider more performance than…
bigdata platform with Kubernets or Hadoop
Hadoop: Hadoop kubernets MapReduce Spark on K8s Flink stream HDFS S3? any better one Resource manager Yarn/Mesos K8s itself During its evolution phase, Hadoop provided three main functionalities that…
