This post summarizes ideas about microservices, that is a type of distributed system. This post is part of a series of articles about distributed systems. Description of Microservices IT microservices is a service-oriented architecture (SOA) where the application is splitted…
A software-defined network (SDN) is an approach to network management that enables dynamic and programmatically network configuration. This is a contrast with traditional networks, where the network is defined by using hardware components. An SDN looks like a single logical…
Virtual patching is an IT security control that can be applied when instead of applying a security patch, additional measures are applied to mitigate the risk of not applying this patch. The reasons why a patch is not applied could…
This post explains some aspects of IT security on databases. It is part of the main post about introduction to IT security. Database Concurrency Issues Lost updates occur when one transaction writes a value to the database that overwrites a…
This post summarizes hints about how to choose a free and open source software (FOSS) license. Choosing a FOSS License There is no a perfect open source licenses that can is suitable for all situations. It depends on the biggest…
Certified Cloud Security Practitioner (CCSP) is a certification focused on cloud security and issued by American non-profit organization ISC(2) CCSP certification is more detailed than CCSK certificate, that is issued by Cloud Security Alliance (CSA). Some recommend to obtain CCSK…
This post summarizes some metadata file formats structures. List of Metadata File Formats Metadata formats: XMP Extended Metadata Platform (XMP) is published as the standard ISO 16684-1:2012. IPTC Information Interchange Model (IIM). IPTC has been largely superseded by XMP. Exif…
Kerberos is both an ticket-based Authentication, Authorization and Accountability (AAA) network protocol and a SSO implementation: It is the most common ticket system, used for example in on-premise Windows networks. Kerberos issues tickets that can be presented to various services…
ExifTool is both command-line tool and a Perl library to work with file metadata. It is free and open-source software (FOSS), under a license GPLv1+ or Artistic License. Installing ExifTool You can install ExifTool on macOS by typing: Getting Support…
This post is about data science and engineering, that can be considered one of the main fields of information technology. You can read this post about information Technology Types of Data according to its Structure Types of data: An example…