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junv cc0e673fb8 Update the format

2018-02-15 17:04:21 +11:00

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Relation

Mysql
Postgres
Microsoft SQL Server
Oracle
Sqlite

NoSql

Monodb
- Replica Set
  - Primary
  - Secondary
  - Hidden
Redis
- Cluster
  - Strong recommend 3 masters and 3 slaves
Hbase
Cassendra

SQL

Index
- Index is unique but not mandatory
join
MYSQL
- tips
  - datetime
    - 8 bytes 1000-01-01 00:00:00 ~ 9999-12-31 23:59:59
    - store a absolute value
  - timestamp
    - 4 bytes 1970-01-01 08:00:01 ~ 2038-01-19 11:14:07
    - will impacted by time zone
    - index by timestamp will be faster than datetime due to 4 bytes.

Message Queue

Rabbitmq

activeMQ

Redis