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  • Anubis: DDos Protection

    calendar May 13, 2025 路 1 min read
     devops en knowledgebase lettere-a-mia-figlia  路 DDoS
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    Anubis: DDos Protection
    A tool that weigh the soul of incoming HTTP requests using proof-of-work to stop AI crawler. A beautiful idea againsta AI crazy bots
  • KarmaKit and Watchtower

    calendar May 10, 2025 路 2 min read
     devops en knowledgebase  路 Mordor docker
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    KarmaKit and  Watchtower

    Good Karma Kit

    The Good Karma Kit is “a Docker Compose project to run on servers with spare CPU, disk, and bandwidth.” I like the idea in principle, but it is always a complex thing to do, because if you host unknown content, you can get in trouble easily (like pirated content or worst…)


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  • Screen to Gif and Terminal Screencam

    calendar Mar 31, 2025 路 1 min read
     en knowledgebase  路 relax
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    Screen to Gif and Terminal Screencam

    I want to share with you two tools I use a lot on some situation, where I need to write short manuals for co-worker or end-customers.


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  • PostgreSQL Queue in Java + Spring

    calendar Mar 29, 2025 路 4 min read
     en knowledgebase sql  路 java nosql postgresql
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    PostgreSQL Queue in Java + Spring

    We already discussed about Queue management solutions in the past, and I am always happy to write about it. Queue managers are not easy to implement, and there is a reson if IBM MQ Series is still a successful product. Some month ago, a big bank customer asked me to provide a small queue implementation to increase asynchronous internal processing of our payment solution.

    The project had very strong contraints: I could not use existing queue system because they were not yet available, and I need to be able to provide microservice parallelism in a cloud-environent.

    I have very little time to provide a solid solution, and re-inventing the wheel was not an option. Performance was important, but we plan to have a managable numbers of transactions per seconds, far behind modern cloud database capacity.

    Challenge accepted.


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  • Spring Boot and database testing: production defects

    calendar Jun 17, 2024 路 1 min read
     en java knowledgebase  路 spring-boot sql
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    Spring Boot and database testing: production defects

    Sometimes you need to fix a production defect. To do it, you need to mirror a specific set of data, and do a test to proof the bug and then fix it.


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  • How GenAI works & hot news on Gemma

    calendar Feb 24, 2024 路 3 min read
     en featured generativeai knowledgebase  路 373 ideas macm1 macos ollama
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    How GenAI works & hot news on Gemma

    This week was very hot because Google published Gemma, a smal-size LLM, and also Nvidia has a rush on stock market, with a evaluation around 2000 BILLIONS dollars. Last but not least, Mistral.ai published a service for its more advanced model, which can also run on-prem.


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  • Exploring Generative AI: LLama2 on MacM1 Take 1

    calendar Feb 17, 2024 路 10 min read
     en featured generativeai knowledgebase  路 373 ideas macm1 macos ollama
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    Exploring Generative AI: LLama2 on MacM1 Take 1

    Generative artificial intelligence (GenAI) is artificial intelligence capable of generating text, images or other data using generative models, often in response to prompts.

    Generative AI models learn the patterns and structure of their input training data and then generate new data that has similar characteristics. This similarity is probability-based.

    At low level, these systems are based on Transformer deep-learning architecture and are called聽generative pre-trained transformer聽 (GPT) first defined in 2018 (for a complete description refer to Wikipedia)


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  • Latency numers every programmer should know

    calendar Aug 23, 2023 路 2 min read
     en featured knowledgebase lang retro-computing software
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    Latency numers every programmer should know

    Modern computer are very very very fast. C/64 was about 1Mhz and you can hangs it just throwing a 10.000 cycle in interpreted BASIC v2 language.


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  • Programming is being crystal clear

    calendar Aug 14, 2023 路 1 min read
     en knowledgebase  路 programming
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    Programming is being crystal clear
    August throughts
    Programming is like writing.

    Code must be easy to read, and understand. For this reason I do not like very much technologies like:


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  • Mini Server @ Home

    calendar May 23, 2023 路 3 min read
     en knowledgebase
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    Mini Server @ Home

    I the last years I decided to put a stop on my RasperryPI2 and have a mini pc always on.

    It is a very slow centrino with 2 CPU threads and 8Gb of RAM, a huble micro SATA SSD and works great with Debian Linux. I use it as a benchmark to understand if a project is worth studying: if the CPU Load stay low, the code is very well written.


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    Giovanni Giorgi

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