大家好,又见面了,我是你们的朋友全栈君。 所有应用软件之中,数据库可能是最复杂的。 MySQL的手册有3000多页,PostgreSQL的手册有2000多页,Oracle的手册更是比它们相加还要厚。 但是,自己写一个最简单的数据库,做起来并不难。Reddit上面有一个帖子,只用了几百个字,就把原理讲清楚了。下面是我根据这个帖子整理的...
[root@db1 test_db]# du -sh /var/lib/mysql 1.7G /var/lib/mysql [root@db1 test_db]# mariabackup --backup --slave-info --tmpdir=/tmp --stream=xbstream --parallel=4 --datadir=/var/lib/mysql 2>backup.log | pssh -I --host='192.168.56.112 192.168.56.113' "mbstream --directory=/...
On Reddit, some users focused on my assertion that the C# language was more advanced than Java. Is it? jeffcox111 comments: I write in C# and Java professionally and I have to say I prefer C# hands down. Generics are very old news now in .Net. Take a look at type inference, lambda...
SQL Server, and MySQL with it leaning more toward PostgreSQL each day. We are perhaps somewhat unique in the PostgreSQL community in that Oracle never comes into our equation of decisions (though Oracle and PostgreSQL are perhaps more similar than the others). Oracle is too expensive for most ...
DB-Engines 排行榜 是衡量数据库流行度的标尺。这份排行不是十全十美的,评分也带有主观色彩。但它评选出的前十名还是基本合理的。排行榜显示,截止到2021年12月,PostgreSQL 在最受欢迎的数据库中仍旧位列第四,排在 Oracle 、MySQL 和 MSSQL 之后。不过,在过去一年里它与 MSSQL 之间的差距已经缩小了。