Cloud Computing, Cloud Services are compromise for pricing. On Cloud Server WordPress caching database via plugin is just bad idea to activate for pagespeed. You can enable MySQL cache for performance which we discussed before - of course it needs SSH access. For the shared server, WordPress caching database plugins are not bad because backend is actually nicely tweaked and is a real … [Read more...]
Arduino Vacuum Tube Stereo Preamp : Parts & Circuit Diagram
Although the developer retired it, all parts, circuit diagrams are available. Let us have a look at Arduino vacuum tube stereo preamp thing and imagine to modify it to make it more classic and premium quality. We published the previous guide to have snake animation on TM1637 LED display. Arduino Vacuum Tube Stereo Preamp : Parts & Circuit Diagram E88CC-TK Black … [Read more...]
Difference Between Data Warehouse And Data Lake
Nowadays it is common to come around phrases like Data Warehouse, Data Lake. Data warehouses is four decade old established concept. Data lake is a new idea. What is the difference between Data Warehouse and Data Lake? We talked about the concept about Data lake in a previous article. Explanation of Data Warehouse is needed. Database is the most common way of data storage for the digital data. … [Read more...]
How To Manage, Monitor Processes On SSH
This is an essential part to master after getting used with the basics of server management. Here is how to manage, monitor processes on SSH. Apart from the Kernel, these processes are main part of GNU/Linux and unix systems provide various ways to view and control the running processes. Note that you may be really be able to manipulate all the processes on a server with OpenVZ virtualization. In … [Read more...]
Cheap Cloud & Virtual Servers For Running Apache Big Data Tools
Wikipedia uses OVH. These days which were once known as "Low End Box" has been a cost effective but powerful platform to test, deploy things which can be done on servers. We have a list of Big Data tutorials and list of Apache Big Data tools. Here are some points for selecting correct servers for running Apache Big Data tools. As we clearly said before - there are some positive and negative points … [Read more...]
Arduino TM1637 Scrolling Text, Snake Examples
We published an introductory guide with TM1637 7 segment LED display many months ago and later shown many advanced tutorials on this website. Snake animation is used in the proprietary led displays to indicate working, busy. Those are common on DVD players, satellite television receiver sets etc. A dash like ---- like bright thing rotates throughout the border of the rectangle. Here are examples … [Read more...]
Explained : This site works only in browsers with SNI support
If you have shared host or a cloud or virtual or dedicated server or service hosting multiple domains, it is normal to face the message - This site works only in browsers with SNI support. It's not an error, it's a warning message. It is a thing related to IPv4 and initial days with TLS. We are trying to explain the implication of the error message and in very short, for ordinary websites like a … [Read more...]
Cheapest CDNs With HTTPS, IPv6, HTTP/2, Brotli
The reason to repeat the old topic is revision of pricing and often the CDN providers become bad after running few years as good. KeyCDN is a rip off now, once we promoted KeyCDN. Once we talked about Rackspace Cloud Files as it used to cost $1 per month, now maintaining the account costs $50 per month. What are the cheapest CDNs with HTTPS, IPv6, HTTP/2, Brotli support at this moment is an … [Read more...]
What Are Filament LED Bulbs (Faux Vintage Bulb)?
We like incandescent bulbs and thats why we have a bulb socket guide, project to blink 1.8v flashlight bulb with Arduino. Of course you have seen Made In China filament led bulbs which are sold as faux vintage bulbs. How they works and what types are available? If you never understood the thing, the photography in this article definitely making you understand what they are. LED filament bulbs has … [Read more...]
Fix : WordPress Plugin Update Not Working
This is another common complain - WordPress plugin update not working after upgrading the version, do you have bug? You did something reading from some of us as trick to hide notification & now forgot it. That is very common. Here is how to proceed step by step to fix WordPress plugin update not working issue. Plus we are giving you extra tips for managing plugin updates. WordPress … [Read more...]
Photoduino : Arduino Based DSLR Controller For High Speed Photography
In a previous guide we talked a basic way to build a remote shutter release control for the DSLR cameras and other digital cameras. In this article, we will talk about Photoduino. Photoduino is a shield and a software library to setup Arduino based DSLR camera controller. There is also schematics to develop it yourself. Unfortunately, developer has no longer support for the project. Here is … [Read more...]