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  • Anubis: DDos Protection

    calendar May 13, 2025 · 1 min read
     devops en knowledgebase lettere-a-mia-figlia  · 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 · 2 min read
     devops en knowledgebase  · 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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  • FatLama for GenAI: The comeback!

    calendar Apr 18, 2025 · 1 min read
     en generativeai  · GenAI
     ·
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    FatLama for GenAI: The comeback!

    FatLama is my cool newsletter about GenAI. It is in Italian, but easy to translate with your ChatGPT4 :)


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  • Screen to Gif and Terminal Screencam

    calendar Mar 31, 2025 · 1 min read
     en knowledgebase  · 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 · 4 min read
     en knowledgebase sql  · 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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  • HP Calculators custom chips around 1980

    calendar Mar 18, 2025 · 5 min read
     en lettere-a-mia-figlia  · hp12c nut retro-computing saturn
     ·
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    HP Calculators custom chips around 1980

    HP started designing handhelded calculators from 1968 until the end of ‘80. I buyed an HP-42S around 1993 but it has been designed near 1986.

    Here I want to focus on the chip design of the 10C series, a compact set of calculator with programming abilities but with full numeric display. The HP-15C was introduced in 1982, in the full 8bit computer era, the same year of the C/64. Later model will feature a more mature “Saturn” processor. I will describe here this chip at the best of my abilities, because it sheds a light on how custom architecture was done around end of 1979.


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  • One Month after Isso commenting system is online

    calendar Feb 5, 2025 · 1 min read
     en site  · leaving-wordpress
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    One Month after Isso commenting system is online

    We installed Isso comment system one month ago. It is time to do some review. I will update this page in the next month to add more insights if they would occur to my mind. I chosed Isso for the following reasons:


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  • HP-12C Will Never Die

    calendar Feb 2, 2025 · 6 min read
     en lettere-a-mia-figlia  · hp12c hp42s
     ·
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    HP-12C Will Never Die

    The HP-12C is the only HP RPN calculator which is still produced and sold, despite is was designed in 1980. The calculator is produced by a subsidary licensed by HP, and you can find it around 40$ in US and around 70€ in Europe/UK. There was designed more than 14 diferent revisions by HP.


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  • FreeBSD on MacBook Mid 2009 with BroadCom WIFI

    calendar Jan 21, 2025 · 4 min read
     en software  · BCM4322 broadcom bwn freebsd unix
     ·
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    FreeBSD on MacBook Mid 2009 with BroadCom WIFI

    After years, I decided to try a FreeBSD fresh install, to revive a old MacBookPro: the results was great and impressive, also if you think the hardware is over 15 years old. I want to share with you my success.


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  • Magicron, small K8s template to make cronjob

    calendar Nov 23, 2024 · 3 min read
     devops en  · cronjob k8s
     ·
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    Magicron, small K8s template to make cronjob

    Sometimes you need to create a lot of CronJobs in k8s. In particular, in my last project I need to create a lot of stupid “web hooks” to fire complex job execution. K8s is well suited for this task because it take care of launching a single job instance, and relaunch them in case of error.


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    Giovanni Giorgi

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