The Backend Engineering Show with Hussein Nasser

By Hussein NasserTechnology

The Backend Engineering Show with Hussein Nasser episodes

May 29, 2021 Tor’s Connection Establishment - The Backend Engineering Show with Hussein Nasser
In this episode, I will discuss Tor’s circuit Establishment which is the core of the Tor protocol.
https://svn-archive.torproject.org/svn/projects/design-paper/tor-design.pdf
https://youtu.be/gIkzx7-s2RU

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35 min
May 27, 2021 I almost Burnt out creating software engineering content on YouTube, here is what I learned
This is an honest video about burnout and what a content creator can do to avoid it creating content on YouTube.

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16 min
May 26, 2021 Long Polling and how it differs from Push, Poll and SSE - The Backend Engineering Show
In this episode of the backend engineering show, I'll discuss long polling technique of backend communication. I will also touch upon Polling and Pushing too and the pros and cons of each.
* Intro 0:00
* Polling 2:45
* Pushing 6:30
* Long Polling 18:00
* SSE 23:00
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27 min
May 23, 2021 The New Postgres 14 Looks Promising - The Backend Engineering Show with Hussein Nasser
In this episode of the Backend Engineering show, we will go through the new features in Postgres 14. Here is a rundown of improvements made to the database platform with timestamps.
0:00 Intro
2:20 Performance
18:50 Data Types and SQL
23:00 Administration
32:30 Replication and Recovery
35:47 Security

Postgres 14 Beta 1
https://www.postgresql.org/about/news/postgresql-14-beta-1-released-2213/

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40 min
May 20, 2021 The OSI Model by Example - The Backend Engineering Show with Hussein Nasser
In this episode of the Backend Engineering Show, I’ll explain the OSI Model with an example. I start with the physical layer which is often ignored moved up to the application layer, presentation layer, session layer, transport layer, IP layer, and data link layer. I believe every software engineer should understand the OSI Model as it helps cement the fundamental understanding of networking applications.
Intro 0:00
Layer 1 Physical 4:00
Layer 7 Application 9:45
Layer 6 Presentation 11:30
Layer 5 Session 14:20
Layer 4 Transport 15:00
Layer 3 IP 18:00
Layer 2 Data Link 20:00
Summary 28:00

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32 min
May 18, 2021 Optimizing Communication and Networking in Database Systems
In today's show, I discuss the nature of communications in database systems and how the pattern completely changed with 3-tier web architecture. I also discuss whether multiplexing protocols such as HTTP/2 and QUIC can help elevate some of the inefficiencies introduced.
* Intro 0:00
* Communication Protocols 2:00
* 3 Web Tier Architecture 8:00
* Connection Pooling 14:50
* Database Connection Multiplexing 23:40
* Will Databases handle high concurrency 32:00

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42 min
May 17, 2021 If you are using Let’s Encrypt Watch out for this
DST Root CA X3 Expires on September 2021, a ROOT certificate that signs Let's Encrypt Certificate authority, a very popular CA. In this video, I will discuss the ramification of this change.
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🏭 Backend Engineering Videos in Order
https://backend.husseinnasser.com
15 min
May 13, 2021 This is why Salesforce services went down on May 11 2021
Salesforce services went down as a result of a DNS update, let us discuss how can tiny DNS unavailability cause a severe outage of 5 hours.
From salesforce "On May 11, 2021, at approximately 21:08 Universal Coordinated Time (UTC), the Salesforce Technology team became aware of a service disruption across Salesforce production instances. The disruption impacted the ability for users to log into their Salesforce environments within the core Salesforce services, Marketing Cloud, Commerce Cloud, Government Cloud, Experience Cloud, Heroku, Pardot, and Vlocity. In addition, the status.salesforce.com Trust site was also unavailable, and customers were unable to log support cases. Some customers may have also experienced issues with Multi-Factor Authentication (MFA) during the incident. "
Resources
https://help.salesforce.com/articleView?id=000358392&type=1&mode=1

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🏭 Backend Engineering Videos in Order
https://backend.husseinnasser.com
14 min
May 10, 2021 How HAProxy forwards 2 Million Requests Per Second? - The Backend Engineering Show
In this show, I go into detail on how HAProxy achieved 2 million HTTP requests per second. This is a very well-written article that discusses how the HAProxy team benchmarked the product on a 64 core ARM machine leading to over 2 million requests per second. There are many components and low-level points that I try to elaborate on, timestamps below.

0:00 Intro
2:40 Summary of the Article
11:55 Latency and Throughput in HAProxy 2.3 vs 2.4
21:00 How TCP Connections Affects Performance
28:00 Maximum Packets we can get in 100Gbps Network?
35:00 How 64 Cores are divided between workloads
40:00 Tail latencies HAProxy 2.3 vs 2.4
42:50 How TLS Affects Performance?

HAProxy Blog https://www.haproxy.com/blog/haproxy-forwards-over-2-million-http-requests-per-second-on-a-single-aws-arm-instance/

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48 min
May 09, 2021 The Tale of OLTP, OLAP, and HTAP in Data Warehousing - The Backend Engineering Show with Hussein Nasser
In this show, I discuss why we have 3 data models in database systems, OLTP (Online Transactional Processing) OLAP (Online Analytical Processing), and HTAP (Hybrid Transactional Analytical Processing). I’ll also explain the difference between them, the use of ETL tools (extract transform load) to load data from transactional to analytical databases, and what is the future of HTAP.

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43 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.