The Backend Engineering Show with Hussein Nasser

At 3:47 am PST almost all google services went down including, gmail, youtube, drive, docs, meet, nest , google maps and many more. It took close to an hour to bring them back up. We still don’t know what caused this outage, in this video we will try to make sense from what we have gathered so far. A detailed analysis video will follow once we get a response from google symptoms Could not sign in to google (account not found) Could not authenticate if you already have a token Services not require authentication also fails to retrieve certain account information (profile, YouTube comments) Guess -> Borg Service that provide authentication, authorization went down, a fix? Storage qouta issue? https://twitter.com/googlecloud/status/1338493015145504770 https://www.tomsguide.com/news/gmail-and-youtube-down-several-google-services-are-not-working-latest-updates Google down? Realtime status, issues and outages for the UK | Downdetector Google Workspace Status Dashboard

When the private key of a matching public key that belong to a certificate is leaked, an attacker can intercept server hello, use their own dh parameters sign it with the stolen private key and ship it to the client effectively doing MITM. This is extremely dangerous and we have no way in the client to know a MITM has happened. That is why a certificate sometimes has to be revoked, and in this video I’m going to discuss those revocation techniques. 0:00 How Certificate Works 3:00 Certificate Revocation List 4:10 OCSP 7:00 OCSP Stapling

In The Backend Engineering Show Live, we discuss Impostor syndrome and Staying Motivated in software engineering field.

Oblivious DoH is a technology that separates IP addresses from queries, so that no single entity can see both at the same time. Cloudflare, Apple & Fastly worked on this and did a good write-up of the tech, we discuss it in this video https://blog.cloudflare.com/oblivious-dns/ https://blog.cloudflare.com/oblivious-dns/

Oracle introduces a Game Changer Feature in MySQL that allows for OLAP & OLTP workloads in a single database. This is huge let us discuss https://www.oracle.com/emea/news/announcement/oracle-announces-mysql-database-service-with-integrated-analytics-engine-2020-12-03.html https://dev.mysql.com/doc/mysql-analytics/en/mysql-analytics-introduction.html 0:00 Intro 1:40 History of ETL 7:00 How Kafka Helped Data Warehouse 8:20 How RAPID Solves this 11:14 MySQL Database Service Analytics Engine (RAPID) Architecture 14:00 Loading Data 18:00 Summary

In The Backend Engineering Show Live we will have a casual Q&A around QUIC Outline  HTTP/1.1 Trouble HTTP/2 Trouble QUIC Handshake QUIC 0RTT HPACK vs QPACK Why HTTP/3

In AWS re-invent, Amazon announced open sourcing Babelfish for PostgreSQL, a SQL Server-compatible end-point for PostgreSQL to make PostgreSQL fluent in understanding communication from apps written for SQL Server. Let us discuss what is this technology and whether if its gonna really move developers away form Microsoft SQL Server to Postgres Resources https://aws.amazon.com/blogs/opensource/want-more-postgresql-you-just-might-like-babelfish/ Chapters 0:00 Intro 1:30 Postgres vs SQLServer 5:20 What is Babelfish? 9:40 Why Babelfish May not Work 10:06 Will Babelfish Includes everything? 11:46 BabelFish is an Extra Layer 13:35 What REALLY is Babelfish? 15:00 Performance

Attackers have been disguising trojans and other malicious codes in post-install NPM packages and developers have been targeted. This is another incident from NPM. NPM needs to step up and solve this problem https://www.zdnet.com/article/malicious-npm-packages-caught-installing-remote-access-trojans/

AWS US east-1 experienced an outage Nov-25-2020. Amazon has updated us with summary detailing what exactly happened to amazon Kinesis that caused the outage let us discuss it 0:00 Intro 1:00 Tldr (diagram) 7:30 Detailed Analysis of What Happened 25:00 Why Cognito Went Down 31:20 Why CloudWatch Went Down 33:20 Why Lambda and AutoScaling Went Down 35:50 Why EventBridge, Elastic Kubernetes and Container Service Went Down 38:00 Why Service Status Went Down 40:00 Summary https://aws.amazon.com/message/11201/

AWS US east-1 experienced an outage yesterday, let us discuss what could have been the problem and what amazon did to solve it — Latest Update (6:23 PM PST): We’d like to provide an update on the issue affecting the Kinesis Data Streams API, and other dependent services, within the US-EAST-1 Region. We have now fully mitigated the impact to the subsystem within Kinesis that is responsible for the processing of incoming requests and are no longer seeing increased error rates or latencies. However, we are not yet taking the full traffic load and are working to relax request throttles on the service. Over the next few hours we expect to relax these throttles to previous levels. We expect customers to begin seeing recovery as these throttles are relaxed over this timeframe. Resources https://www.datacenterdynamics.com/en/news/aws-us-east-1-region-suffers-errors-and-outages-impacting-its-status-page/ https://disqus.com/by/disqus_DZeJlmjjGx/ https://downdetector.com/status/amazon/ https://www.youtube.com/watch?v=I9v-fCz0HZY&feature=youtu.be