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  • Raspberry Pi 4 on sale now from $35 - Raspberry Pi

    calendar Jun 24, 2019 路 1 min read
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    We have a surprise for you today: Raspberry Pi 4 is now on sale, starting at $35!

    Here are the highlights:


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  • 8 Bit computers: from 1977 to 1985

    calendar Jun 27, 2019 路 1 min read
     books en retro-computing  路 6502 book c64 retro-computing vic20
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    The first draft of my book is here! Take a look to http://8bit.gioorgi.com/


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  • ESP32/ESP8266 Wi-Fi Attacks | Hacker News

    calendar Sep 4, 2019 路 1 min read
     en  路 esp8266
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    From: ESP32/ESP8266 Wi-Fi Attacks | Hacker News

    This repository demonstrates 3 Wi-Fi attacks against the popular ESP32/8266 IoT devices:


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  • Commander X16: retro magic dream

    calendar Sep 18, 2019 路 2 min read
     en featured retro-computing  路 c64 retro-computing
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    Some time ago I mentioned the Pyc64 project, a “differently emulated” C/64. There’s a much more ambitious project that’s going under pressure, it’s called Commander X 16. Commander X 16 has been started by David Murray and three other guys.


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  • Rust Programming Language

    calendar Sep 23, 2019 路 1 min read
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    I have done a quick peek of the Rust Programming language: it is very popular on Internet, it rivals with Go on the popularity score.


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  • Docker tips

    calendar Sep 27, 2019 路 2 min read
     devops en knowledgebase  路 docker
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    Docker tips

    Use docker in docker to drive docker from a container Working under windows, sometimes docker slow down. Sometimes you need to access to the MobyVM. With this line:


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  • On Constants

    calendar Oct 4, 2019 路 1 min read
     en humor lang software  路 evil ideas java
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    On Constants

    I think constants are evil (just joking but….I will explain why).


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  • The dark side of eLearning

    calendar Oct 15, 2019 路 1 min read
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    My company gave me access to a bunch of Skillport course. Courses was on Kafka and Docker and was rather old (2015). But the very bad thing was the absolute shabby approach of the course. For instance to explain the use of Docker Label metadata (1 concept+ 1 command line example) Skillport proposed a 23 minute-video splitted in 5 section. We are talking about a two-line concept. It is impossible to study fast in such way.


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  • Ansible rulez!

    calendar Nov 13, 2019 路 2 min read
     devops en  路 raspberrypi
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    In the last weekend I needed to restore my RasperryPi service box. It is a raspberrypi 2 which mostly make backups of my blogs.


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  • Avoid Kafka if unsure (think twice series)

    calendar Dec 2, 2019 路 2 min read
     en featured knowledgebase sql  路 java nosql
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    Avoid Kafka if unsure (think twice series)

    Some co-workers started using Apache Kafka con a bunch of our Customers.

    Apache Kafka is a community distributed event streaming platform capable of handling trillions of events a day. Initially conceived as a messaging queue, Kafka is based on an abstraction of a distributed commit log[*].
    To get this goal, Apache Kafka needs a complex servers setup, even more complex if you want the certification for the producing company (Confluent).聽 Now, if you are planning to use Kafka like a simple JavaMessaeSystem (JMS) implementation, think twice before going on this route.

    PostgreSQL 12 offers a fair (and open source) partition implementation, whereas if money are not a problem, Oracle 12c can happy scale on billions of record before running into troubles (and ExaData can scale even more).

    PostgreSQL and Oracle offer optimizations for partitioned data, called “Partition Pruning” in PostreSQL teminology:

    With partition pruning enabled, the planner will examine the definition of each partition and prove that the partition need not be scanned because it could not contain any rows meeting the query's WHERE clause. When the planner can prove this, it excludes (prunes) the partition from the query plan.
    This feature is quite brand new (popped in PostreSQL 11) but it is essential to a successful partition strategy. Before these feature, partitioning was a black magic art. Now it is simpler to manage.
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Giovanni Giorgi

Master Solution Architect, father and free spirit.
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    Last updated:2025-05-27 02:00
    Giovanni Giorgi

    Copyright 1999-  GIOVANNI GIORGI. All Rights Reserved

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