Browser Offline
Posted in How To Web

How to make browser offline cache retrieve new version of the page when browser is online, but keep using cache when it is offline

Offline cache is awesome! For certain things. For most regular web pages it is unfortunately not. Here is web developer’s most frequent use for the offline cache: make browser use cached version of the page when browser is offline but refresh it when it gets online. What could be simpler…

READ MORE
Posted in How To Linux Web

AWS EC2 ssh not responding in RHEL 6.4 AMI

I was fighting with an AWS bug today seeming just ridiculous for a system that makes ssh the only way to access the server. With no console login EC2 users are completely dependent on flawless sshd operation and Amazon team just did a really bad job preparing the RHEL 6.4…

READ MORE
Posted in How To Tools

How to use large / multiline text as a field in mongodb

I’m working on a project that requires storing large multiline chunks of text in MongoDB. The chunks should be inserted in the database during initial database population, so I need to enter them somewhere in db population script. Unfortunately you can’t just put something like this: db.tests.insert( { name: ‘test’,…

READ MORE
Posted in Linux Software

rPlay rocks!

I’m currently beta-testing rPlay and this software totally rocks! What’s rPlay? Well, imagine yourself willing to share content of your iPhone or iPad screen with you family. There are couple ways to do this: you can get an Apple TV ($99) or … well, that’s actually it. AirPlay is a…

READ MORE
Posted in Other

Fixing Verizon FiOS DNS Problems

Your superfancy FiOS internet link is getting flaky for no reason every now and then? The reason could be not the fiber-optic cable (which is awesome), but a problem with part of infrastructure called DNS servers. The DNS (Domain Name Resolution) servers are responsible for translating domain names such as…

READ MORE
Posted in Other Web

ActionView::Template::Error (active_admin.css isn’t precompiled)

Just sepnt quite some time fixing infamous “ActionView::Template::Error (active_admin.css isn’t precompiled)” error on prod. Everything worked fine in dev environment but once I put the code on prod it broke. Couple websites proposed several solutions, but none of them worked for me. Finally a combination of difference recipes seemed to…

READ MORE
Posted in Other

Apple’s review fraud prevention system is as useless as Amazon’s :(

I already was writing about fraudulent reviews on amazon.com. Just today found the same lame approache to reviews on app store. Developer Jackadam seems investing ton of money into the promotion of a program called “Dark Sky – Weather radar, Hyperlocal Forecasts, and …”. I found a very positive review…

READ MORE
Posted in Other

Fraudulent promotion techniques on Amazon are getting smarter

Take a look at this item:

READ MORE
Posted in How To Other

Oracle Policy Automation Modeler Debugger 10.4.3 is not working with Internet Explorer 10

Oracel Policy Modeler Debugger is not working with Internet Explorer 10. You can still use it to author and compile rules, but debugger with windows just hangs. There is no official fix for this yet, so your only option is to uninstall IE10 if you can. In windows 7 go…

READ MORE
Posted in Other Web

Enabling HTTPS in JBoss EAP 5, Using Self-Signed Certificate

Surprisingly by default JBoss EAP (at least version 5) comes with HTTPS disabled. Here is how to enable it:

READ MORE
Posted in Hardware How To

FPV Japan / BEVRC Cable pinout

If you don’t hear about it FPV Japan is a small device that records standard definition video from analog sources. This is an indispensable device for FPV RC pilots and the ones who want to digitize old analog video tapes. I fall into both categories, but unfortunately the video cable…

READ MORE