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  • Tech Blog

    Cloud storage overview

    In a narrow sense, cloud storage refers to object storage. In a broader sense, it refers to any storage service (block, file or object level)…

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  • Tech Blog

    Kafka overview

    Zookeeper General definition of distributed system: a software system that is composed of independent computing entities linked together by a computer network whose components communicate…

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  • Tech Blog

    EMC Isilon

    EMC has several product lines for different use cases in enterprise data storage. Like may other IT solutions, the website is clouded with marketing terms…

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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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  • Tech Blog

    Introduction to Authentication Frameworks (PAM and SSPI)

    This article gives a very brief high-level introduction to PAM (Pluggable Authentication Module) and SSPI (Security Support Provider Interface) as authentication frameworks in Linux and…

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  • Tech Blog

    SASL Authentication Mechanisms

    Introduction Authentication is used in many protocols (such as LDAP binding) and it usually involves sending password. Given the nature of authentication protocol, its traffic…

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