原创 [轉]java不同容器不同操作系統下中文問題解決方法
java不同容器不同操作系統下中文問題解決方法 -Ddefault.client.encoding=GBK -Dfile.encoding=GBK -Duser.language=Zh -Duser.region=CN 添加以上java虛
2020-06-13 07:10:08
原创 MySQL 存儲 schema-less的數據
from timyang’s blog 綜合取捨，使用MySQL來存儲key/value(schema-less)數據,value中可以放： Python dict JSON object 實際friendfeed存放的是zli
2020-06-13 07:10:08
原创 Python-- 有權重的隨機選擇， Weighted Random Choice
import random def windex(lst): '''an attempt to make a random.choose() function that makes weighted choices
2020-06-13 07:10:08
原创 MyISAM比InnoDB快是誤傳
It’s an excellent idea to run a realistic load simulation on a test server and then literally pull the power plug. Th
2020-02-23 12:04:44
原创 MySQL的內存表的侷限性
Although Memory tables are very fast, they often don’t work well as a general- purpose replacement for disk-based tab
2020-02-23 12:04:44
原创 C++裏面的幾個生僻操作符
今天看一本算法書，發現C++竟然支持這樣幾個操作符：＜？， ＜？＝，＞？，＞？＝ 大概相遇max,min這種函數的作用，帶等號的可以賦值。
2020-02-23 12:04:44
原创 快速的表複製
mysql> CREATE TABLE innodb_table LIKE myisam_table; mysql> ALTER TABLE innodb_table ENGINE=InnoDB; mysql> INSERT I
2020-02-23 12:04:44
原创 JOIN 還是 IN ; 一條還是多條
Join Decomposition Many high-performance web sites use join decomposition. You can decompose a join by running multip
2020-02-23 12:04:44
原创 Sphinx將推出實時增量搜索引擎
And, while you're busy upgrading, we'll probably be busy building 1.x-alpha with incremental (real-time) updates for Ch
2020-02-23 12:04:44
原创 InnoDB的Primary Key不易過大
InnoDB tables are built on a clustered index, which we will cover in detail in Chapter 3. InnoDB’s index structures a
2020-02-23 12:04:44