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记一次MongoDB性能问题 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...验证这种可能，我搜索了一下MongoDB日志：
shell> grep FileAllocator /path/to/log
[FileAllocator] allocating new datafile ... filling with zeroes...
[FileAllocator] done allocating datafile ... took ... secs
我使用的文件系统是ext4（xfs也不错 ），创建数据文件...
How do you parse and process HTML/XML in PHP?
...led, with no responses to fixes since 14 Apr 16.
Ganon
A universal tokenizer and HTML/XML/RSS DOM Parser
Ability to manipulate elements and their attributes
Supports invalid HTML and UTF8
Can perform advanced CSS3-like queries on elements (like jQuery -- namespaces supported) ...
How to add an Access-Control-Allow-Origin header
...ecloud.com/v1.0
From the results returned, extract the values for X-Auth-Token and X-Storage-Url
curl -X POST \
-H "Content-Type: font/woff" \
--header "X-Auth-Token: returned-x-auth-token" returned-x-storage-url/name-of-your-container/fonts/fontawesome-webfont.woff
curl -X POST \
-H "Cont...
How to get past the login page with Wget?
...u can set multiple cookies at the same time also, --header "Cookie: access_token=IKVYJ;XSRF-TOKEN=5e10521d"
– Phil C
May 25 '18 at 13:28
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Google OAuth 2 authorization - Error: redirect_uri_mismatch
... pass the code to your server, redeem it, and store the access and refresh tokens, then you have to use the literal string postmessage instead of the redirect_uri.
For example, building on the snippet in the Ruby doc:
client_secrets = Google::APIClient::ClientSecrets.load('client_secrets.json')
au...
How to use PHP OPCache?
...econds) to check file timestamps for changes to the shared
;memory storage allocation.
opcache.revalidate_freq=60
;If enabled, a fast shutdown sequence is used for the accelerated code
;The fast shutdown sequence doesn't free each allocated block, but lets
;the Zend Engine Memory Manager do the wor...
configure: error: Unable to find gd.h anywhere under /usr/local/gd - ...
...：
configure.ac:64: error: possibly undefined macro: AM_ICONV
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation. 错误，在./configure 后加上--enable-m4_pattern_allow 重新编译即可通过
4.重新编译php，通过
gd.h
PHP CURL DELETE request
...Key, true));
$wsseHeader = "Authorization: WSSE profile=\"UsernameToken\"\n";
$wsseHeader .= sprintf(
'X-WSSE: UsernameToken Username="%s", PasswordDigest="%s", Nonce="%s", Created="%s"', $this->_username, $digest, $nonce, $created
);
return $wsseHead...
Comparison of Lucene Analyzers
...
In general, any analyzer in Lucene is tokenizer + stemmer + stop-words filter.
Tokenizer splits your text into chunks, and since different analyzers may use different tokenizers, you can get different output token streams, i.e. sequences of chunks of text. For ...
Multi-line strings in PHP
...owdoc syntax.
$var is NOT replaced in a nowdoc.
EOD;
Beware that the end token EOD must not be indented at all, or PHP won't acknowledge it. Also, you don't have to use "EOD"; it can be any string you want.
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