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[Note] Business Transformation through Blockchain – Volume I

1. Blockchain Economic Networks: Economic Network Theory—Systemic Risk and Blockchain Technology Economic Network Analysis Fedwire Example: The net- work has a tightly connected core of banks to which most other banks connect. Large banks are disproportionately connected to small banks and vice versa; the average bank is connected to 15 others, but this does not give …

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Storage long text in MySQL

 

Packet Too Large A communication packet is a single SQL statement sent to the MySQL server, a single row that is sent to the client, or a binary log event sent from a master replication server to a slave. The largest possible packet that can be transmitted to or from a MySQL 5.5 …

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[note] PHP exec Docker run

For example: use this docker container to convert pdf file to html

  PHP use shell_exec function to exec docker run, there is some notes: Assign a container name with the –name option Automatically clean up the container and remove the file system when the container exits, you can add the –rm flag The input device is not a TTY. …

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[note] Web Scraping and Print to PDF

https://medium.com/@e_mad_ehsan/getting-started-with-puppeteer-and-chrome-headless-for-web-scrapping-6bf5979dee3e https://www.chromium.org/developers/creating-and-using-profiles https://chromedevtools.github.io/devtools-protocol/tot/Page/#method-printToPDF https://www.tecmint.com/install-google-chrome-on-redhat-centos-fedora-linux/ https://bugs.chromium.org/p/chromium/issues/detail?id=603559 https://bugs.chromium.org/p/chromium/issues/detail?id=617931#c1

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