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Describe the architecture you use for Java web applications? [closed]
...r Leaderboards, using Ordered Lists.
Memcache for Token Store.
Database
MySQL, Memcached, Redis
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SQL JOIN vs IN performance?
...y you mention that, I did a blog post on this very subject.
See Oracle vs MySQL vs SQL Server: Aggregation vs Joins
Short answer: you have to test it and individual databases vary a lot.
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Primary key/foreign Key naming convention [closed]
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The "using" keyword is MySql specific. Doesn't work in T-SQL—unfortunately.
– birdus
Aug 8 '17 at 18:46
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Add … if string is too long PHP [duplicate]
I have a description field in my MySQL database, and I access the database on two different pages, one page I display the whole field, but on the other, I just want to display the first 50 characters. If the string in the description field is less than 50 characters, then it won't show ... , but if...
JavaScript - onClick to get the ID of the clicked button
...c functionality. I'm working on adding functions to a dynamic DB using PHP/MySQL and JS; this works out well for adding a specific function to specific dynamic classes. Thanks!
– ejbytes
Sep 8 '16 at 23:21
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How to check if a Constraint exists in Sql server?
... There's nothing wrong in brackets. This is a SQL Server question, not a MySQL one.
– Álvaro González
Feb 25 '14 at 17:45
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List of Rails Model Types
...l are supported in ActiveRecord supported databases without any extra gem (MySQL, PostgreSQL, SQLite):
:binary
:boolean
:date
:datetime
:decimal
:float
:integer
:primary_key
:string
:text
:time
:timestamp
In the scaffold generator you can also declare the foreign references using :references fie...
Nginx serves .php files as downloads, instead of executing them
...ttps://www.digitalocean.com/community/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-14-04 but when I try to run some .php file it's just downloading it...
for example... http://5.101.99.123/info.php it's working but... If I go to the main http://5.101.99.123 it's downloadi...
Difference between BeautifulSoup and Scrapy crawler?
...ter extraction. For example we can configure pipeline to push data to your mysql server.
Cookies: scrapy automatically handles cookies for us.
etc.
TLDR: scrapy is a framework that provides everything that one might
need to build large scale crawls. It provides various features that
hide c...
java中的缓存技术该如何实现 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...时需要谨慎.第四个环节,数据库中也可以有缓存, 比如说mysql的querycache.
那么也就是说在整个请求流程的任何一点,我们都可以加缓存.但是是所有的数据都可以放进缓存的吗.当然不是,需要放进缓存的数据总是有一些特征的,要清...