The Backend Engineering Show with Hussein Nasser

By Hussein NasserTechnology

The Backend Engineering Show with Hussein Nasser episodes

February 14, 2019 Episode 89 - Push vs Pull Notifications
This is originally a video that I converted into a podcast I think it is still useful
https://www.youtube.com/watch?v=8D1NAezC-Dk
Notifications have become part of our daily life. We receive them almost every minute on our phones, tablets, and computers. As software engineers, it is good to understand how notifications work, and what different type of notifications there are (push and pull notifications), the advantages and disadvantages of each. In this video I'll explain how the push notification and pull notification works and the stateful vs stateless nature of each and how it affects the architecture decision of our application that we are building.
Online diagram tool used in this video:
Http://www.gliffy.com
Become a better software engineer by joining IGeometry checkout the other software engineering content on this channel
-Hussein
16 min
February 12, 2019 Episode 88 - What was wrong with SOAP Protocol?
Soap (Simple Object Access Protocol) has been a popular messaging protocol in the early 2000s. It uses XML as a format with well defined schema, and your choice of stransport protocol. Despite it still being used people have been moving towards #REST architecture and more so #gRPC recently. In this episode we discuss why people moved from #SOAP and what are the advantages and disadvantages of SOAP. Stay Awesome! Hussein Nasser
12 min
February 09, 2019 Episode 87 - Q&A - When to use Shape File vs Geodatabase?
In this episode we answer a question from Anthony.
How do you know when to focus on building a geodatabase (let's say SQL server database) rather than just let the data sit in the shapefile?
I would say if you are planning to have multiple users accessing and editing the data, also if your data grew too large shape files might not be scalable to read. Also if you are planning to use the capabilities of Geodatabase such as domains, subtypes, attribute rules, versioning, archiving etc not to mention sharing as well. if you wont plan to use any of the above then shape file is a good choice. If you are planning to just maintain a shape file data of 10k or 100k features and you edit it yourself locally it works!
11 min
February 05, 2019 Episode 86 - Recycling in ArcGIS Server
When you publish a service you can specify how many processes (min / max) your service can use. As requests are being served memory is allocated, state is changed, some processes could go corrupt
Recycling is the process destroying and re-spawning processes that are running to maintain a good memory footprint.
Here is a good read on recycling
http://enterprise.arcgis.com/en/server/latest/publish-services/windows/tuning-and-configuring-services.htm
Enjoy
Hussein
12 min
February 02, 2019 Episode 85 - No Excuses
I don’t have the equipments. There are people doing that already. And my personal favorite, I don’t know enough. Excuses are always there, In this podcast I talk about my personal story of how I got started.
You don't need fancy equipments to share your skills and knowledge. In this podcast we discuss how with just a screen sharing app (Quicktime) and this microphone I was able to grow my youtube software engineering channel to 2000 subs and more than 1 million watch hours.
42 min
January 31, 2019 Episode 84 - Layer vs Data Source
A podcast about the difference between a layer and its data source. Enjoy!
11 min
January 27, 2019 Episode 83 - Q&A: Programming for GIS
Vikrant asked a question on Linked:
Dear Hussein, I want to learn programming for GIS. Is python useful? I am not very good in programming. Kindly guide. And thanks for the posts..
Programming for GIS really depends on what you are trying to do and how do you want to advance your career. In this podcast we will discuss four kind of areas where you can programming for GIS.
GIS Admin Programming
GIS Desktop Programming
GIS Web Programming
GIS Server Programming
Enjoy
27 min
January 19, 2019 Episode 82 - Cross Origin Resource Sharing (CORS)
If you ever go a website and there some images you liked to reference in your page or blog. You would copy the link, and put in your blog.
Only to find out that the image looks broken?
You copy the link again and paste it in URL and it opens fine?
This is an effect of CORS or cross origin resource sharing.

https://husseinnasser.com/courses

15 min
January 06, 2019 Episode 81 - ArcGIS Server Talk - SOE vs SOI
ArcGIS Server is a technology that allows you to pull your heavy work load on the backend and isolate the clients from complexity of the database by exposing HTTP services instead of low level TCP database. You can also extend the server capability by writing your own extensions.
In this episode ArcGIS Server talk we will talk about two ways you can extend your ArcGIS server, Server Object Extensions and Server Object Interceptors.
Server Object Extension
Extends the MapServer to allow you to write your own logic that cannot be easily done by built - in Feature Server or Map server. Or it is more performant to do it.
Users create new excavation I want to auto-calculate the price of the excavation based on the soil type, whether there are trees, rocks.
Server Object Interceptors
You don’t write new thing you instead intercept existing calls to query and applyEdits to inject your own logic to pre or post processing. Lets say every-time any application tries to write to the service, you want to verify that the edit is permissible. Include water marks to all images that are downloaded.
Learn more about SOE vs SOI here
http://enterprise.arcgis.com/en/server/latest/publish-services/linux/about-extending-services.htm
18 min
January 04, 2019 Episode 80 - MIME Sniffing
Any content served through HTTP “should” include meta data about its type. This is so the browser/client knows what to do with the content it receives. For example, if the content type header is an image the browser will preview it, if it is HTML it will render the markup and execute any javascript code.

Content type however is optional and web masters sometimes don’t set it, which leave the browsers wondering about the content type it is consuming. So browsers had to implement parsing and “sniffing” techniques to detect the type of content when a content type header was not served.

However, this caused security problems and attacks that we explain in this video! So to prevent sniffing, web servers can return X-Content-Type-Options: nosniff which opts out browsers from sniffing the content.

Media type: https://en.wikipedia.org/wiki/Media_type#Common_examples

Cheers!
Hussein Nasser
12 min

About The Backend Engineering Show with Hussein Nasser

From the publisher's feed

Welcome to the Backend Engineering Show podcast with your host Hussein Nasser. If you like software engineering you’ve come to the right place. I discuss all sorts of software engineering technologies and news with specific focus on the backend. All opinions are my own.