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  • Thumbnail for Etcd – the key-value store for Kubernetes

    Etcd – the key-value store for Kubernetes

    Etcd in Kubernetes In Kubernetes architecture, etcd is the data store. It stores the desired state of Kubernetes object. API server is the only client…

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  • Thumbnail for Hosting database on Kubernetes

    Hosting database on Kubernetes

    Background “We want to host Postgres database on Kubernetes. Can you help us?”. The client appears assertive and reluctant to resort to managed services. So…

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  • Spark, Cassandra and Python

    In this post we touch briefly on Apache Spark as a cluster computing framework that supports a number of drivers to pipe data in, and…

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  • Intro to Big Data Projects

    Modern applications produce super large datasets beyond what traditional data-processing application can handle. Big data is a discipline that specialize in processing such data. For…

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  • 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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  • Cassandra data model (as opposed to relational model)

    Bad data model design with Cassandra causes chronic pains as application scales. I had to re-read about data model design in “Cassandra – the Definitive…

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