How to copy off images from Chrome's cache (on Mac)

How to find Chrome cache on Mac

export YOU=your_username
export PROFILE=Default

mkdir ~/chrome_images
cp /Users/$YOU/Library/Caches/Google/Chrome/$PROFILE/Cache/* ~/chrome_images/
for k in `/bin/ls`; do mv $k $k.jpg; done # rename all files to jpg

open ~/chrome_images

# Now browse the image folder and find the images you want

# More sophisticated renaming example:

if [[ `file $filename | grep JPEG` ]]; then mv $filename{,.jpg} ; fi

Git cache password over https

error: cannot run git-credential-cache--daemon: No such file or directory
fatal: unable to start cache daemon: No such file or directory

# fix:
wget http://example.com/git-daemon-1.7.12.4-0.7.1.x86_64.rpm
sudo rpm -i git-daemon-1.7.12.4-0.7.1.x86_64.rpm
git config --global credential.helper cache
git config --global credential.helper 'cache --timeout=28800' # 8 hours

(source)

Android: Don't refresh page when no signal

chrome://flags/#enable-offline-mode

and

chrome://flags/#enable-offline-load-stale-cache

Unfortunately this doesn't work anymore - those flags were experimental.
In fact I've switched to Firefox (which is also much faster on Android) because Chrome tabs kept annoyingly reloading when the phone had no signal.

Code works on one environment but not another

What can differ between environments? Check the following:

* Your code (obviously)
* Versions of other dependent packages - both in-house and third-party
* Versions of other installed in-house modules
* Versions of other Perl CPAN modules
* Processes which didn't die when you restarted the app
* Data in the database
* Number of rows in tables, i.e. is some limit being hit?
* Schema of the database
* Browser cache
* Server side web cache
* Files on disk, e.g. cached print documents

(source: a decade's experience building software)

How to talk to memcached

1. telnet to the server (or localhost) on the right port
2. type "flush_all" to invalidate the whole cache
3. type "delete [key]" to invalidate a particular item

See also the memcache protocol