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新浪是如何分析处理32亿条实时日志的？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...时日志分析的价值。为用户做好服务也不是修改几个配置文件，调优几个程序运行参数就能搞定的。为了提供更好的服务，我们在下面三个方向做了努力：
一、提升服务质量
我们首先做了Elasticsearch优化，Hardware Level由于我们...
Does PostgreSQL support “accent insensitive” collations?
...
Isn't the collation utf8_general_ci the answer for this kind of issues?
– Med
Apr 1 '14 at 14:36
5
...
SEH stack 结构探索（1）--- 从 SEH 链的最底层（线程第1个SEH结构）说起 -...
...后的堆栈指针（ESP）的值。在我的 VC++ 10.0 版本的 CRT 头文件 except.inc 里找到的定义是:
; exception registration record structure.
__EXCEPTIONREGISTRATIONRECORD struc
prev_structure dd ?
ExceptionHandler dd ?
...
List of Delphi language features and version in which they were introduced/deprecated
...space resolution of unit names
Delphi 10.1 Berlin
Native support for Utf8String and RawByteString type on all platforms
The [weak], [unsafe] and [volatile] attributes are supported on all compilers.
The size of extended on OSX is now 16 bytes.
class and record helpers cannot access pr...
How can I prevent SQL injection in PHP?
...O is:
$dbConnection = new PDO('mysql:dbname=dbtest;host=127.0.0.1;charset=utf8', 'user', 'password');
$dbConnection->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
$dbConnection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
In the above example the error mode isn't strictly n...
What GRANT USAGE ON SCHEMA exactly do?
...n;
\password $ROLE_REMOTE
create database $DB owner $ROLE_LOCAL encoding "utf8";
\connect $DB $ROLE_LOCAL
# Create all tables and objects, and after that:
\connect $DB postgres
revoke connect on database $DB from public;
revoke all on schema public from public;
revoke all on all tables in schema...
Understanding the Rails Authenticity Token
...form accept-charset="UTF-8" action="/" method="post">
<input name="utf8" type="hidden" value="&#x2713;" />
<input name="authenticity_token" type="hidden" value="J7CBxfHalt49OSHp27hblqK20c9PgwJ108nDHX/8Cts=" />
Form contents
</form>
In particular, the following is gen...
What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?
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Addition: utf8everywhere.org recommends using UTF-8 on Windows, and Boost.Nowide is scheduled for formal review.
– Yakov Galka
Jun 22 '12 at 10:42
...
How to create a new database after initally installing oracle database 11g Express Edition?
...en set
rem oracle service is running
REM SET PARAMETERS
set char_set =al32utf8
set nls_char_set =al16utf16
set ora_dir=d:\app\db\oracle
set version=11.2.0.0
set app_name=xyz
set db_name=%app_name%_db
set db_sid=%db_name%_sid
set db_ins=%db_name%_ins
set sys_passwd=x3y5z7
set system_passwd=1x4y9z
...
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
...一般的划分方法是从技术上划分,可以分成几种,内存,硬盘文件.数据库.
(1) 内存.将缓存放在内存中是最快的选择,任何程序直接操作内存都比操作硬盘要快的多,但是如果你的数据要考虑到break down的问题,因为放在内存中的数据我...