1. Cassandra is a decentralized structured storage system designed for scalability and high availability without single points of failure.
2. It uses consistent hashing to partition data across nodes and provide high availability, and an anti-entropy process to detect and repair inconsistencies between nodes.
3. Clients can specify consistency levels for reads and writes, with different levels balancing availability and consistency. The quorum protocol is used to achieve consistency when replicating data across nodes.
NagoyaStat #1 で用いた発表資料になります。主な内容は統計モデリングの考え方と、ポアソン分布に従うデータに対して最尤推定法を適用する方法です。
This slide is used at NagoyaStat #1 on August 6, 2016. Main contents are way of thinking of statistical modeling and applying Maximum Likelihood Estimation to data following poisson distribution.
NagoyaStat #1 で用いた発表資料になります。主な内容は統計モデリングの考え方と、ポアソン分布に従うデータに対して最尤推定法を適用する方法です。
This slide is used at NagoyaStat #1 on August 6, 2016. Main contents are way of thinking of statistical modeling and applying Maximum Likelihood Estimation to data following poisson distribution.
Complete defeat of Japanese IT cloud industry forces university students to cope with the situation to a different direction: to be enrolled in an application service provider which uses US clouds such as AWS and Azure. The author argues the reason to have become a loser was that Japanese computer engineers could not persuade their superiors who graduated from authentic electric/electronic departments. They usually look down computer engineers in terms of basic math. and physics ability, but do not know what consistent-hashing technology is, for example. On the other hand, computer engineers in oldest stratum aged around sixty-years old at most, assumingly could not cause their bosses (management) to launch new cloud project …
IoT Devices Compliant with JC-STAR Using Linux as a Container OSTomohiro Saneyoshi
Security requirements for IoT devices are becoming more defined, as seen with the EU Cyber Resilience Act and Japan’s JC-STAR.
It's common for IoT devices to run Linux as their operating system. However, adopting general-purpose Linux distributions like Ubuntu or Debian, or Yocto-based Linux, presents certain difficulties. This article outlines those difficulties.
It also, it highlights the security benefits of using a Linux-based container OS and explains how to adopt it with JC-STAR, using the "Armadillo Base OS" as an example.
Feb.25.2025@JAWS-UG IoT
30. IT勉強会カレンダー for Mobile
http://be-grace.co.jp/itcal.php
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http://pastalablog.s3.zmx.jp/itcal_iphone/
Special Thanks @yousuke_saki Special Thanks @pastak
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