As many of you already know,PLMCEis an annual MySQL
community conference and Expo organized by Percona in the month of April
(usually). It is a great conference, not only to meet new and eminent people in
MySQL and related database fields, but also to attend interesting talks, and
also to give some.
This year I spoke about synchronous replication at a higher level. The talk was
titled“ACIDic Clusters: Review of current relational databases with synchronous replication”. Having previously given talks with boring titles (but interesting content), this time I decided to go with an interesting title, and it seemed to fit well with topic being discussed.
In short, the talk was about ACID-compliant databases supporting relational
semantics (essentially, SQL) while providing synchronous replication. The talk
was not about why we need all three in a database, but it was on why some of
them may depend on each other. In this review, I looked at various aspects and
features of databases like Galera/PXC, MySQL NDB, Google F1 and FoundationDB,
while also discussing the topic of synchronous replication and its family in
general.
One of my primary motivations for this talk was so that people truly understand
what they are using, specifically in my case, the product that I manage/develop
- Percona XtraDB Cluster (PXC), based on Galera replication. There are plenty
of misconceptions on what a synchronous replication needs to be, and what it
doesn’t, and on the overheads/latencies associated with them. It was also
interesting learning how other systems like F1/Spanner are built, and how they
handle latencies for instance or have constraints like atomic clocks. The issues
associated with transactions involving optimistic concurrency control than
pessismistic locking are also interesting to look at.
Here are the slides of the talk:

本文讨论了使用MySQL的Alter Table语句修改表,包括添加/删除列,重命名表/列以及更改列数据类型。

文章讨论了为MySQL配置SSL/TLS加密,包括证书生成和验证。主要问题是使用自签名证书的安全含义。[角色计数:159]

文章讨论了流行的MySQL GUI工具,例如MySQL Workbench和PhpMyAdmin,比较了它们对初学者和高级用户的功能和适合性。[159个字符]

本文讨论了使用Drop Table语句在MySQL中放下表,并强调了预防措施和风险。它强调,没有备份,该动作是不可逆转的,详细介绍了恢复方法和潜在的生产环境危害。

本文讨论了在PostgreSQL,MySQL和MongoDB等各个数据库中的JSON列上创建索引,以增强查询性能。它解释了索引特定的JSON路径的语法和好处,并列出了支持的数据库系统。

文章讨论了使用准备好的语句,输入验证和强密码策略确保针对SQL注入和蛮力攻击的MySQL。(159个字符)


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