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  • Tech Blog

    Virtualization 3 of 4 – Containers

    In broad terms, virtualization of computing resource is about isolation of resources at different levels. We have covered hypervisor-based virtualization in the other post. In…

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  • Tech Blog

    Virtualization 1 of 4 – Hypervisor

    In broad terms, virtualization of computing resource is about isolation of resources, at different levels. There are five levels of virtualization: In my context I…

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  • Tech Blog

    How NFS works

    I touched on NFS in several previous postings, and here is a deeper dive of this particular protocol. NFS is built on top of Remote…

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  • Tech Blog

    Docker network

    Reading notes of “Docker DeepDive”. Docker networking is backed by libnetwork, which is an implementation of Container Network Model (CNM), an open-source pluggable architecture designed…

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  • Tech Blog

    DataStax Python Driver

    For someone with relational database background, analyzing data in Cassandra isn’t intuitive. There are two reasons. First, Cassandra data table is hardly updated or deleted…

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  • Tech Blog

    Performance Analysis

    Overview In 2015, Brendan Gregg posted two great articles on Netflix blog: Linux Performance Analysis in 60 seconds, and Linux Perfomrance Tools. They have great…

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