htaccess – 煎炸熊の記事本

Fix Libgomp: Thread Creation Failed Error

3 月 152021

By default ImageMagick convert is multi threaded and will use all the available CPUs. This creates burst of CPU usage, especially when thumbnail is generated concurrently. This impacts other server activity. Any software application that uses ImageMagick, especially WordPress can experience this error when there is a limited number of resources that account utilizes in comparison to the overall server.

This error can be corrected by specifying a rule within your .htaccess file.

SetEnv MAGICK_THREAD_LIMIT 1

Adding this rule, you tell ImageMagick to run only on a single thread and this prevent the previous error.

This can also be tuned by editing the /etc/ImageMagick/policy.xml and set:

<policy domain="resource" name="thread" value="1"/>

either by adding an env variable for the user in the .bash_profile:

export MAGICK_THREAD_LIMIT=1

Apache 的 mod rewrite 重寫規則筆記

Apache No Responses »

8 月 142017

source: [Rewrite note.] 重寫規則筆記

Apache 的 mod_rewrite 大家應該都很熟。然後，我以前也刻了超 60 行的重寫規則，不要問我為什麼要寫那麼多！因為，舊網站資料夾切的太細，重刻網站的時候，為了不要流失搜尋引擎過來的鍊結，只好這麼做了。

Stupid .htaccess Tricks

Apache, 電腦網路 No Responses »

5 月 092017

Source: Stupid .htaccess Tricks

Welcome to Perishable Press! This article, Stupid .htaccess Tricks, covers just about every .htaccess “trick” in the book, and easily is the site’s most popular resource.

In addition to this tutorial, you also may want to explore the growing .htaccess archive. Along with all things .htaccess, Perishable Press also focuses on HTML, CSS, PHP, JavaScript, security, and just about every other aspect of web design, blogging, and online success. If these topics are of interest to you, I encourage you to subscribe to Perishable Press for a periodic dose of online enlightenment?;)

Redirect Query String via .htaccess

Apache, 電腦網路 No Responses »

5 月 092017

Source: Redirect Query String via .htaccess

In general, redirecting URLs is a piece of cake with Apache’s .htaccess. The only trick is redirecting based on the URL’s query-string value. Doing so requires slightly different directives that many people are not aware of, so it’s common to see a questions like, “why isn’t my redirect working for query strings?” This quick tutorial aims to clear up any confusion and explains how to redirect any URL based on its query string.

Eight Ways to Redirect with Apache’s mod_rewrite

Apache, 電腦網路 No Responses »

5 月 092017

Source: Eight Ways to Redirect with Apache’s mod_rewrite

With the imminent release of the next series of (4G) blacklist articles here at Perishable Press, now is the perfect time to examine eight of the most commonly employed blacklisting methods achieved with Apache’s incredible rewrite module, mod_rewrite. In addition to facilitating site security, the techniques presented in this article will improve your understanding of the different rewrite methods available with mod_rewrite.

How to Block Entire Countries from Accessing Your Website

Apache, Linux, 電腦網路 No Responses »

9 月 202016

Source: How to Block Entire Countries from Accessing Your Website

If you run a website, then by default it is accessible to the whole planet.

Many websites are simply not relevant to people in other countries. So, you should not expect significant traffic from them as a matter of course.

If you have a local bookstore and your primary market is local people walking into your store, then there is no need to let any other countries index or waste bandwidth on your server. The same might be true of a carwash, or babysitters, or lawn mowing.

If you run a personal or even private website, such as a family blog, you may want to highly restrict traffic by default.

htaccess 301 redirect – Remove query string (QSA)

Apache, Linux, 電腦網路 No Responses »

2 月 142016

Source: htaccess 301 redirect – Remove query string (QSA)

You can use this rule:

RewriteRule ^menu\.php$ /new-page-name? [L,R=301]

Take note of trailing ? in the end which is used for stripping off any existing query string in the original URI.

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