IT Stuff
Saturday, July 17, 2021
RAFT algorithm/protocol
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Based on notes made upon: http://thesecretlivesofdata.com/raft/ Consensus - agreement on a value: non-distributed - DB client send data t...
Thursday, July 1, 2021
Linux file/directory permissions and extended permissions/ACL (getfacl/setfacl)
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[admino@mwg www]$ getfacl SystemFiles/ # file: SystemFiles/ # owner: www-data # group: www-data user::rwx group::rwx other::r-x #Give acces...
Tuesday, December 1, 2020
Asterisk ARI Introduction
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To enable: Asterisk HTTP server is used to access ARI, WS, AMI. If you need WebSocket: The built-in Asterisk HTTP server is used to provid...
Monday, November 23, 2020
Cisco DNA quick overview
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SDN (Software Defined Networking) - attempts to centralize network intelligence in one network component (SDN Controller) by disassociating...
MySQL DB-size, tables size
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Size of all tables in particular DB (change NEEDED_DB_NAME to needed): SELECT table_name AS "Table", data_length+index_len...
DB Normal Forms (primitive description)
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Normal Forms (NF) helps to resolve possible problems with insert, update and delete DB operations. To be in the next level NF DB must alre...
Monday, August 24, 2020
Short note about MySQL INDEX, KEY
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MySQL KEY = INDEX - helps to find data faster via using indexing in needed columns PRIMARY KEY (PRI) - repetitions in this column (or gro...
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