Programming Languages
| Item | Years | Info |
|---|---|---|
| GoLang | 9 | actually used now in production as substitute for JAVA |
| Rust | 1 | actually used now in webdev and AI |
| TypeScript | 1 | was used as main language in production in all areas |
| Java | 10 | was used as main language in production in all areas |
| C | 3 | was used in a big communication project |
| JavaScript | 2 | actually used as main language for Web Application |
| Dart | 1 | used before JavaScript |
| Ruby | 1 | was used before Golang |
| Python | 2 | used for AI PyToch |
| PHP | 1 | was used for web application before Java |
Operating Systems
| Item | Years | Info |
|---|---|---|
| Linux | 22 | 99% used in production as main OS |
| FreeBsd | 1 | was used in production abandoned now in favor of Linux |
| Solaris | 1 | was used in production abandoned now in favor of Linux |
| Cisco IOS | 1 | was used in production for VOIP abandoned now in favor of Linux |
Data Bases
| Item | Years | Info |
|---|---|---|
| ElasticSearch | 1 | used in some cases |
| MongoDB | 2 | mostly used in production |
| Mysql | 20 | mostly used in production before NOSQL DB |
| Redis | 2 | widely used in production especially in Clouds structure |
| Sqlite | 1 | in some cases was used in production for small application |
| CouchDB | 1 | in some cases was used in production |
| Postgresql | 3 | was use before MySQL as main DB |
| Oracle | 1 | was only tested as potential replacement for MySQL |
Telecommunication Application
| Item | Years | Info |
|---|---|---|
| Asterisk | 12 | used as main application for production |
| Kamailio | 1 | was only tested as potential replacement for Asterisk |
| Cisco | 1 | was used in production |
| Kannel | 8 | main application for SMS messages actually in use |
WebApplication Development
| Item | Years | Info |
|---|---|---|
| Astro Build | 1 | actually used in production |
| Vue | 2 | actually used in production |
| ReactJS | 1 | actually used in production |
| Angularjs | 2 | actually used in production |
| Google Web Toolkit | 1 | abandoned in favor of Angularjs |
| Ruby on Rails | 1 | used before Angularjs/ReactJS frameworks |
| Django | 1 | was used in come cases JavaSript frameworks |
Cloud Computing
| Item | Years | Info |
|---|---|---|
| Cloudflare | 6 | actually used in production as main platform |
| Digital Ocean | 3 | actually used in production |
| Oracle Cloud | 1 | limited use |
| Amazon Web Service | 6 | still main production based on AWS |
| Google App Engine | 6 | still in use but abandoned in favor of Digital Ocean |
| Rackspace | 6 | still in use but abandoned in favor of Digital Ocean |
| Heroku | 1 | only was tested |
| Docker | 2 | actually used in combination Docker/Kubernates |
| Hetzner Cloud | 1 | actually used in production |
SEO Computing
| Item | Years | Info |
|---|---|---|
| Organic optimization | 8 | constantly monitored and studied |
| AdWords | 3 | used in production |
| AdSense | 3 | used in production |
Machine leaning
| Item | Years | Info |
|---|---|---|
| PyTorch | 2 | NLP creation language model for Chat application |