Da PDF to Excel (XLS) — ¡100% Gratis! My First Petabyte: Now What? Multi-tenancy, multi-master, Sharding, scaling and analytics with Drizzle at linux.conf.au 2012. Guerrilla Manual Online. Because of the great diversity of time scales that exist in modern computer systems, it's a good idea to try and get a more intuitive feel for some of them. My first attempt at helping you to do that was in 1998, where I included the table shown at the left in The Practical Performance Analyst. I updated that as Table 3.1 in my Perl PDQ book. Here, I've rendered those quantities as a data frame in R: Subsystem nanoSeconds secondZ Rescaling SIunit 1 4 GHz CPU clock 2.50e-01 0.25 1.00 s 2 L1 cache access 5.00e-01 0.50 1.00 s 3 L2 cache access 1.25e+00 1.25 1.00 s 4 Memory bus cycle 2.00e+00 2.00 1.00 s 5 DRAM chip access 6.00e+01 60.00 1.00 min 6 Physical disk seek 3.50e+06 3500000.00 1.33 month 7 Network NFS read 3.20e+07 32000000.00 1.01 yr 8 Database SQL update 5.00e+08 500000000.00 15.84 yr 9 Magnetic tape read 5.00e+09 5000000000.00 1.58 century To get a better impression of the vast range of time scales, actual nanoseconds are rescaled to be units measured in seconds.
Chocolatey Gallery. Your database in the cloud. By Navneet Joneja, Product Manager for Google Cloud SQL Cross-posted from the Google App Engine Blog One of App Engine’s most requested features has been a simple way to develop traditional database-driven applications. In response to your feedback, we’re happy to announce the limited preview of Google Cloud SQL. You can now choose to power your App Engine applications with a familiar relational database in a fully-managed cloud environment. This allows you to focus on developing your applications and services, free from the chores of managing, maintaining and administering relational databases.
Google Cloud SQL brings many benefits to the App Engine community: No maintenance or administration - we manage the database for you.High reliability and availability - your data is replicated synchronously to multiple data centers. Cloud SQL is available free of charge for now, and we will publish pricing at least 30 days before charging for it. MySQL Performance | Tokutek. Lists: mysql: Re: InnoDB vs. other storage engines. Can HBase replace MySQL as the main database. Scaling Twitter: Making Twitter 10000 Percent Faster. Update 6: Some interesting changes from Twitter's Evan Weaver: everything in RAM now, database is a backup; peaks at 300 tweets/second; every tweet followed by average 126 people; vector cache of tweet IDs; row cache; fragment cache; page cache; keep separate caches; GC makes Ruby optimization resistant so went with Scala; Thrift and HTTP are used internally; 100s internal requests for every external request; rewrote MQ but kept interface the same; 3 queues are used to load balance requests; extensive A/B testing for backwards capability; switched to C memcached client for speed; optimize critical path; faster to get the cached results from the network memory than recompute them locally.Update 5: Twitter on Scala.
A Conversation with Steve Jenson, Alex Payne, and Robey Pointer by Bill Venners. Twitter started as a side project and blew up fast, going from 0 to millions of page views within a few terrifying months. 19 ffmpeg commands for all needs. Getting infos from a video file ffmpeg -i video.avi Turn X images to a video sequence ffmpeg -f image2 -i image%d.jpg video.mpg This command will transform all the images from the current directory (named image1.jpg, image2.jpg, etc…) to a video file named video.mpg.
Turn a video to X images ffmpeg -i video.mpg image%d.jpg This command will generate the files named image1.jpg, image2.jpg, … The following image formats are also availables : PGM, PPM, PAM, PGMYUV, JPEG, GIF, PNG, TIFF, SGI. Encode a video sequence for the iPpod/iPhone ffmpeg -i source_video.avi input -acodec aac -ab 128kb -vcodec mpeg4 -b 1200kb -mbd 2 -flags +4mv+trell -aic 2 -cmp 2 -subcmp 2 -s 320x180 -title X final_video.mp4 Explanations : Source : source_video.aviAudio codec : aacAudio bitrate : 128kb/sVideo codec : mpeg4Video bitrate : 1200kb/sVideo size : 320px par 180pxGenerated video : final_video.mp4 Encode video for the PSP Extracting sound from a video, and save it as Mp3 Convert a wav file to Mp3 Convert .avi video to .mpg.
jQuery 2.0 no será compatible con Internet Explorer 6, 7 u 8. jQuery en este momento está en la versión estable 1.7.2, pero el equipo anunció que a partir de la versión 2.0, jQuery no seguirá desarrollando el modulo "oldIE" que da la compatibilidad a jQuery para IE6, IE7 e IE8. jQuery, sin embargo, seguirá dando soporte a IE6+ en la rama 1.9, que esperan sea equivalente a 2.0 hasta la salida de jQuery 2.1. En sintesis, si necesitas compatibilidad jQuery para IE, puedes usar jQuery 1.9 de aquí al 2014.La razón por la que jQuery abandona IE6, 7 y 8 es porque esas tres versiones usan el mismo motor de render (Trident 4) con muy pocos cambios en el manejo del DOM. Es hasta IE9 que realmente las cosas cambiaron para bien. Darle soporte a IE6, 7 y 8 en el equipo de jQuery, apuntando a futuro, resulta complicado. Linea de tiempo de jQuery Estadísticas de Internet Explorer en Cristalab: Nadie usa IE6, IE7 o IE8.
En Cristalab, sólo el 16% de usuarios usa Internet Explorer. De ese 16%, el 7% usan IE6/IE7. Subtítulos de Películas DivX para descargar. Songr. TRENDnet Store Online : OpenRA - Home. Building a Computing Highway for Web Applications | Research. I live online. I store all my email, documents and pictures in the cloud. Except for work, the only application I regularly use on my computer is a web browser. It gives me access to everything I need. Nearly everything: Although those days when web browsers were only designed for light weight tasks are gone, some compute intensive applications, like photo editing, still force me to leave my browser environment and use a native application instead.
If applications were like road traffic, then web browsers used to be the country roads: Capable of handling some traffic at slow speeds but too underdeveloped to take a heavy load. This advantage is no longer just due to slower execution speeds. Web applications so far have lost out in both regards. This is where Parallel Extensions for JavaScript, code named River Trail, an Intel Labs project I am working on that is currently shown at IDF, comes into the game. Will River Trail be the end to native applications?
Posting Source Code. While WordPress.com doesn’t allow you to use potentially dangerous code on your blog, there is a way to post source code for viewing. We have created a shortcode you can wrap around source code that preserves its formatting and even provides syntax highlighting for certain languages, like so: To accomplish the above, just wrap your code in these tags: [code language="css"] your code here [/code] The language (or lang) parameter controls how the code is syntax highlighted. The following languages are supported: actionscript3bashclojurecoldfusioncppcsharpcssdelphierlangfsharpdiffgroovyhtmljavascriptjavajavafxmatlab (keywords only)objcperlphptextpowershellpythonrrubyscalasqlvbxml If the language parameter is not set, it will default to "text" (no syntax highlighting).
Code in between the source code tags will automatically be encoded for display, you don't need to worry about HTML entities or anything. Configuration Parameters Here's some examples of the above parameters in action: <! Credits. Online syntax highlighting for "html" The Evolution of the Gaming PC. Slim Framework. CodeIgniter for beginner: 5 things you should know | Blog Pisyek. It is almost one year I’ve been using CodeIgniter framework for my projects. Personally, I like this PHP framework very much because it is small, easy to setup, no need to use command prompt and etc. Besides, the documentation is great! However, some of my friends keep bugging me with simple questions about the framework, how to do this, how to do that, bla..bla..bla.., which are the answers already written in the documentation. So, I’m writing this post so that they know what they should. 1.
To setup the connection, open the database.php in config folder or you can refer to the documentation for details. 2. In the CodeIgniter framework, there is a page of documentation, explaining about active record function, replacing the MySQL CRUD (Create, Read, Update, Delete) syntax. 3. Basically, you just need to put a single htaccess file at the same level with index.php file and remove the word “index.php” in the config.php file. 4. Feels like your URL is too long? 5. SL3 + WCF + Stream response - is it possible? SL3 gurus, I'm trying to get a truly stream-oriented connection from a SL3 client app calling my WCF operation with the result being streamed back to the client via the System.IO.Stream class. I have a basic WCF service contract: Stream GetStreamResult (string query, int maxResults) I tried to get this working from my SL3 client, but could not. There were no errors, other than the MemoryStream I re-hydrated from the resulting byte[] was empty.
This began my suspicion - the "Add Service Reference" did not have the async method returning a Stream, but instead a byte[]. So, I decided to modify my service. Byte[] GetStreamResult (string query, int maxResults) it appears to work. But you cannot set the TransferMode on the SL3 side, so I don't know if this is actually streaming or not. I have the potential for some large streams of data and would like to know if you can actually set up a connection between SL3 and WCF where the transport/binding TransferMode=Streamed or StreamingResponse. Bob. Google Nexus tablet price: $99 Nexus tablet launching in 2012. PgModeler - PostgreSQL Database Modeler. Follow pgModeler Project ... and be up-to-date with the most recent fixes and features! Join us on the social networks and make part of a growing community helping to submit bugs, discuss new features, translate pgModeler's interface to your language and much more!
So don't waste your time, pick up the favorite network and start to participate now! ;) Let's help pgModeler Project? ... donate to keep alive the development! Much effort, coffee, chocolate, time and knowledge has been devoted to this project so that a usable and constantly improved product can be delivered to the community. Okay! The Wealth & Health of Nations. EzAuth User Guide | BizWidgets Solutions. 3 CodeIgniter libraries that will make your life easier (EzAuth, Ocular and DataMapper) - Geshan's Blog. CodeIgniter is a Model View Controller (MVC) based open source web application framework for use in building dynamic web sites with PHP.
It has a very small footprint, built for PHP coders who need a simple and elegant toolkit to create full-featured web applications. More About CI Its goal is to enable you to develop projects much faster than you could if you were writing code from scratch, by providing a rich set of libraries for commonly needed tasks, as well as a simple interface and logical structure to access these libraries.
For more information see Codeigniter's official website. As mentioned above the libraries play a great role when you develop your application in Codeigniter. The Libraries Working with CodeIgniter for past 2 years (but not writing anything about it ;) ), here are three external libraries that are bound to make your life easier when you choose CodeIgniter to develop your web application: 1. 2. 3. Conclusion Happy Code Igniting and library hunting :). Machuga/codeigniter-authority-authorization.
[VIDEOTUTORIAL] Cómo instalar Windows 8 con VirtualBox. Instalar Windows 8 preview con VirtualBox (Tutorial) Gmapcatcher - An offline map viewer. Overview GMapCatcher is an offline maps viewer. It can display maps from many providers such as: CloudMade, OpenStreetMap, Yahoo Maps, Bing Maps, Nokia Maps, SkyVector, Google Map. It displays them using a custom GUI. User can view the maps while offline. GMapCatcher doesn't depend on the map's JavaScript. GMapCatcher is written in Python 2.7 & PyGTK, can run on Linux, Windows and Mac OSX. You can find a list of improvements and latest features in the Changelog Download or $ svn checkout gmapcatcher For Windows users, get the latest Windows installer Usage maps.py is a gui program used to browse google map.
After version 0.04, user can force GMapCatcher to re-download old map tiles by checking "Force update". Download.py is a downloader tools that can be used to download map tiles without gui. maps can use files it downloaded without configuration. Below is an example using download.py: By T-Mobile. HTTP Made Really Easy. A Practical Guide to Writing Clients and Servers Home > Web Technology Made Really Easy > HTTP Made Really Easy Donate Table of Contents|Footnotes December 10, 2012-- Updated the links about robots.
HTTP is the network protocol of the Web. It is both simple and powerful. This tutorial explains the simple, English-based structure of HTTP communication, and teaches you the practical details of writing HTTP clients and servers. Since you're reading this, you probably already use CGI. The whole tutorial is about 15 printed pages long, including examples. Before getting started, understand the following two paragraphs: Writing HTTP or other network programs requires more care than programming for a single machine. OK, enough of that. Top of Page Using HTTP 1.0 Upgrading to HTTP 1.1 Appendix The HTTP Specification Several related topics are discussed on a "footnotes" page: What is HTTP? HTTP stands for Hypertext Transfer Protocol. What are "Resources"?
HTTP is used to transmit resources, not just files. 20+ Beautiful Resources That Complement Twitter Bootstrap. Twitter Bootstrap is a beautiful "web design kit" for creating cross browser, consistent and good looking interfaces. With a flexible and well-thought HTML/CSS/Javascript structure, it offers many of the popular UI components, a grid system and JavaScript plugins for common scenarios. And, it seems to be rocking the web design community as there are lots of websites already built and being built with it (it is also the most watched/forked repository in GitHub). Twitter Bootstrap is already powerful enough to empower any web interface. In order to make more use of it and/or ease the development process, there are various tools/resources that complement it.
These include Bootstrap themed vector UI images, WordPress themes, web-based Bootstrap customizers and more. Here they are: jQuery UI Bootstrap This is an awesome resource for jQuery and Twitter Bootstrap users that combines the power of both. Bootstrap Image Gallery jQuery Mobile Bootstrap Theme StyleBootstrap.info Bootswatch Fbootsrapp P.S. Balsamiq. Twilio Conference 2011: Steve Klabnik, Everything You Know About REST Is Wrong. Gabrielflor.it. La NASA planea lanzar a fin de año satélites basados en teléfonos Nexus | Internet. Un smartphone no solo permite hablar por teléfono, mandar mensajes, conectarse a Internet o sacar fotos. Ahora también puede ser usado como satélite.
La NASA se encuentra trabajando en el proyecto PhoneSat, en el cual utilizan componentes de un Nexus con Android como núcleo del aparato. Crédito: The Verge Entre sus ventajas no solo se encuentra su pequeño tamaño, sino también su precio. Con tan solo US$ 3500 se pueden construir los prototipos de PhoneSat. Cada uno de estos satélites utiliza un cubo protector y pesa menos de 1,8 kilos.
Por otra parte, actualmente también se encuentran trabajando en PhoneSat 2.0. Se estima que ambos satélites viajen en un cohete de la NASA a fines de este año. Hypermedia APIs - Jon Moore. How RESTful is Your API? | BitNative. How to use FF Chartwell. Tal Raviv — Being a Developer Makes You Valuable. Learning How to Market Makes You Dangerous. Filabot: Plastic Filament Maker by Tyler McNaney.
Bukobot 3D Printer - Affordable 3D with No Compromises! by Diego Porqueras. gTar: The First Guitar That Anybody Can Play by Incident. 15-Year-Old Maker Astronomically Improves Pancreatic Cancer Test. Ouya: La consola de Kickstarter ya lleva recaudado 5 millones de dólares. New Project :: Fluidui.com. Web Lab. German Scientists Create Aerographite, the Lightest Material in the World.
The missing switch: High-performance monolithic graphene transistors created.