Arthur

Pemberton

Full-stack web applications developer


Welcome to my blog

As I discover new things in my field and solve troublesome problems, I will attempt to document my finds here.

Bets in the NBA

On April 24, 2014, by Arthur Pemberton, 0 Comments

Img by Jb777 link tha 2021

Despite that NBA odds are among to a lot of controversial slots, this game is still played by a lot of players because of the ease of winning this game. If youre looking for an exciting way to bet the NBA odds, now you can bet on the winners and losers of each game for each of the NBAs 29 teams by going to DraftKings . Now you can bet on the winner of each game that matters as the season unfolds in an interactive sportsbook. Enter your team to make a deposit for the right to wager. Dont have enough to bet, no problem. Just open a new account or make an easy wager by setting up a wager on a favorite to win. After the season, you will be able to check back to see if your favorite team has beaten its odds and earned some cash back. In the time being you might want to read some interesting things from celeb beats, an online website that gives great contents regarding casino games and more.

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Improving Xapian backed Haystack searches in Django

On January 9, 2019, by Arthur Pemberton, 0 Comments

I recently switched a Django project utilizing Haystack from Whoosh as the engine to Xapian. The performance significantly improved, but I was left with some deficiencies in the search results — this turned out to be due to the default settings.

Here are the necessary settings to improve the search result quality:

import xapian

HAYSTACK_XAPIAN_FLAGS = (
    xapian.QueryParser.FLAG_PHRASE |
    xapian.QueryParser.FLAG_BOOLEAN |
    xapian.QueryParser.FLAG_LOVEHATE |
    xapian.QueryParser.FLAG_WILDCARD |
    xapian.QueryParser.FLAG_PURE_NOT |
    xapian.QueryParser.FLAG_PARTIAL
)
HAYSTACK_XAPIAN_STEMMING_STRATEGY = 'STEM_ALL'

HAYSTACK_CONNECTIONS = {
    'default': {
        'ENGINE': 'xapian_backend.XapianEngine',
        'PATH': root.path('data/xapian')(),
        'FLAGS': HAYSTACK_XAPIAN_FLAGS,
    },
}

Before these settings, I was having problem with queries being apparently case sensitive, at least when using AutoQuery, and failing partial searches. These changes improve case insensitivity and stemming, which still having almost 100x better performance than Whoosh.

Hopefully this helps someone out there looking for solutions.

Links

On October 2, 2013, by Arthur Pemberton, 0 Comments

Links


Replicating Chilkat AES Cryptography with PyCrypto

On November 22, 2016, by Arthur Pemberton, 0 Comments

Today, I had the need to replicate an encrypted query string token to inter-operate with a third-party commercial application. I was able to determine the library, symmetrical algorithm and secret key being used to create the token. Turns out, it was an ASP.net web application using the Chilkat .NET library to do the encryption and decryption. Specifically, it was the Chilkat AES (aka Rijndael) methods being used.
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Web Application Development

On June 4, 2015, by Arthur Pemberton, 0 Comments

Providing custom web application and web service API development with hourly bill rates, or fixed project estimates. Solutions are developed using flexible, tested tools, and scalable platforms to best meet defined requirements. Specializing is back-end, secure, web interfaces for small to high loads based on horizontally scalable architectures.

Commonly Requested Features

  • Audit/Revision logs
  • Integration into existing authentication systems
  • Integration into existing data stores
  • Mobile device friendly user interfaces
  • Reporting data exported to CSV or Microsoft Excel
  • Subscription based notifications

Application Stack

For details on my preferred choice of software, tools, and supporting services, see my description of my web application stack.

Openfire certificate import

On September 27, 2016, by Arthur Pemberton, 0 Comments

Working with SSL certificates in Openfire are surprisingly troublesome, at least as compared to popular web servers (Apache hTTPd, Nginx, IIS).

I recently needed to update an expiring certificate (having once, previously, figured out how to successfully import a purchased, SSL certificate.

This time I found a nice tutorial: https://alpha-labs.net/2014/12/openfire-and-ciphers/. Thanks to Christian for that.

I’ve made some slight modifications to his Shell script, and I just wanted to share:
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Biography

On October 24, 2013, by Arthur Pemberton, 0 Comments

Biography

Arthur Pemberton

Arthur Pemberton is the Manager of Information Technology and Lead Developer at Mediagistic, Inc. where he manages a team of web developers, IT personnel and third-party vendors. Mr. Pemberton held positions with Henderson Engineers, Inc., and the University of Missouri Kansas City. Arthur holds a Bachelors of Science in Computer Science, and a Masters of Science in Computer Science, along with minors in Physics and Mathematics; all from the University of Missouri Kansas City (UMKC). During that time, he served as president of the student chapter of the Association for Computing Machinery (ACM), participated in the IEEE Robotics competitions, and was also inducted into the international honour society for computing and information disciplines, Upsilon Pi Epsilon

Background

Arthur was born and raised in the island nation of Dominica, nestled in the centre of the Caribbean archipelago. At an early age he gained access to an IBM compatible Apple computer, complete with two 5 1/4-inch floppy disk drives. Years later, and countless hours of computer repair, Turbo Pascal and Delphi programming, and website design, along with a stint as a high school teacher; Arthur moved to the United States to start his formal education in computing.

Interests

One of Arthur’s most enduring interests has been in the Free Software movement, and Open-Source development model. His journey began with Red Hat 7.0 when he needed to provide filtered internet access to a computer lab through a web proxy, and worked with his then classmate, Trevor Christian, to turn an unused desktop into a full gateway, router, and web filter powered by open source. Since then Arthur has participated in various open source communities to varying degrees.

Partners and Colleagues

Adrien Nicholas — Enterprise Java developer based in the Greater New York area, but born in Dominica.

Patrick Alexander — Software Developer.

Yuri Jones — Market Research Analyst at National Bank of Dominica.

Home

On October 1, 2013, by Arthur Pemberton, 0 Comments

Arthur Pemberton – Web Applications Developer

I am a seasoned web applications developer with over seven years of professional experience designing, developing, and deploying end-to-end solutions; and over ten years administering websites. My years of professional and freelance work have allowed me to hone my skills in several areas, ranging from casual computer support, to software architecture, and management of teams of skilled web designers and developers.

Currently based in the Tampa Bay Florida area, I work full-time as an IT manager and lead developer. I also freelance, accepting web projects from small to medium size clients, developing and maintaining WordPress based websites or building custom web apps. My service also extends to Caribbean nation of Dominica, where I work with local partners there to provide scalable solutions.

You can read through my biography for more information, or find my my resume.

Web Application Development

Custom web application development in Python/Django is available to clients, regardless of location. Requirements and specifications are gathered, and quotes are developed based the client provided information and timelines. Testing environments are setup to allow the client to regularly view and monitor progress. Upon completion, the finished applications can either be hosted on my own server resources, or deployed to client owned resources. Read more …

Website Creation and Administration

For companies and individuals looking to expand their web presence, website solutions are offered built on the WordPress platform. Solutions range from simple information websites, to full e-commerce solutions with online marketing budgets. Websites are taken from inception through design to population of supplied content and imagery, and finally publication on the world wide web. Websites can be self-hosted or kept on my own server resources. Costs of websites vary significantly based on complexity of design, number of pages and imagery, and required feature-set. However the typical website cost starts at $500 USD.

Contact

On October 1, 2013, by Arthur Pemberton, 0 Comments

Contact Me

The best way to contact me is via e-mail at pembo13 at gmail dot com.