Beste Nasser podcaster (2024)

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The genius of long polling 28:57

5d ago28:57

28:57

Polling is the ability to interrogate a backend to see if a piece of information is ready. It can introduce a chatty system and as a result long polling was born. In this video I explain the beauty of this design pattern and how we can push it to its limit. 0:00 Intro0:45 Polling2:30 Problem with Polling3:50 Long Polling8:18 Timeouts10:00 Long Poll…

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Denied Pen and Paper, the Calamity of Thursday 54:45

9d ago54:45

54:45

In these last few days, many of the companions explicitly disregarded the prophet's instructions in order to secure political power after his demise. The prophet had attempted to prevent their schemes by instructing many of the senior companions to leave Medina with Usama ibn Zayd, so that Imam Ali could assume leadership without interference, but …

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Disobeying the Prophet 50:55

14d ago50:55

50:55

The Prophet's death was impending, and he had commanded all his companions to join Usama ibn Zayd's army to go fight the Romans. Usama was a young man, and many companions chaffed at being put under the leadership of something that age. The prophet, while sick, had to rebuke them to send them back to the army. Despite his illness, the Prophet would…

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False Prophets 47:41

17d ago47:41

47:41

With the success of Islam, now multiple people started popping up and claiming to be Prophets. They included: - Musaylimah al-Kazzab: a Yemeni who had accepted Islam in the year 10AH. He claimed to have been sent revelation giving him dominion ofer half the earth while (as per him) Prophet Muhammad was supposed to rule the other half. Tribal fanati…

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The Aftermath of Ghadeer Khumm 49:33

20d ago49:33

49:33

After Prophet Muhammad declared Ali ibn Abi Talib's successorship, the angel Gabriel descended with an extension of the verse Quran 5:3, adding "today I have perfected your religion for you, and I have completed my blessing upon you, and I have approved Islam as your religion", showing that there's a version of Islam that's perfected and a version …

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The Event of Ghadir Khumm 52:06

1M ago52:06

52:06

Prophet Muhammad was worried about people rebelling against him if he announced Imam Ali as his successor, so he delayed following the message to formalize his succesorship as long as he was allowed to. The wisdom of this showed by how during the hajj. Some companions of the Prophet had suspected the Prophet would announce Imam Ali as his successor…

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Six stages of a good software engineer 39:27

1M ago39:27

39:27

You get better as a software engineer when you go through these stages. 0:00 Intro 1:15 Understand a technology 7:07 Articulate how it works 15:30 Understand its’ limitations 19:48 Try to build something better 27:45 Realize what you built also has limitations 32:48 Appreciate the original tech as is Understand a technology We use technologies all …

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The Prophet's Only Hajj 50:13

1M ago50:13

50:13

In the last months of the prophet's life, Gabriel descended to the prophet conveying a message from Allah: "There remain two obligations that you must convey to your people: the obligation of Hajj, and the obligation of Wilayah (the guardianship and succession) after you. For indeed, I have never left My earth without a proof, and I will never leav…

1
Missions in Yemen 50:23

1M ago50:23

50:23

Prophet Muhammad sent a mission to Yemen to invite them to Islam. The first mission was led by Khalid ibn Al-Walid, who was a harsh man who had fought against the Muslims in the Battle of Uhud, but he had an aristrocratic background and by making him feel valued Prophet Muhammad had hoped to turn him into a productive member of the Muslim community…

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This new Linux patch can speed up Reading Requests 18:12

2M ago18:12

18:12

Fundamentals of Operating Systems Course https://oscourse.winVery clever! We often call read/rcv system call to read requests from a connection, this copies data from kernel receive buffer to user space which has a cost. This new patch changes this to allow zero copy with notification. “Reading' data out of a socket instead becomes a “notification”…

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Cloudflare's 150ms global cache purge | Deep Dive 1:02:21

2M ago1:02:21

1:02:21

Cloudflare built a global cache purge system that runs under 150 ms. This is how they did it. Using RockDB to maintain local CDN cache, and a peer-to-peer data center distributed system and clever engineering, they went from 1.5 second purge, down to 150 ms. However, this isn’t full picture, because that 150 ms is just actually the P50. In this vid…

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Tax Collection Struggles 56:42

2M ago56:42

56:42

After the Conquest of Makkah, the prophet dispatched tax collectors to different Bedouin tribes, aiming to consolidate an Islamic state and establish a system of governance that would ensure stability, support the needed, and fund state activities. Some tribes like the Tribe of Bnau Tamim resisted paying taxes however, potentially because thought t…

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MySQL is having a bumpy journey 28:34

2M ago28:34

28:34

Fundamentals of Database Engineering udemy course https://databases.winMySQL has been having bumpy journey since 2018 with the release of the version 8.0. Critical crashes that made to the final product, significant performance regressions, and tons of stability and bugs issues. In this video I explore what happened to MySql, are these issues getti…

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How many kernel calls in NodeJS vs Bun vs Python vs native C 20:41

3M ago20:41

20:41

Fundamentals of Operating Systems Course https://oscourse.winIn this video I use strace a performance tool that measures how many system calls does a process makes. We compare a simple task of reading from a file, and we run the program in different runtimes, namely nodejs, buns , python and native C. We discuss the cost of kernel mode switches, sy…

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When do you use threads? 31:08

3M ago31:08

31:08

Fundamentals of Operating Systems Course https://os.husseinnasser.comWhen do you use threads?I would say in scenarios where the task is either 1) IO blocking task2) CPU heavy3) Large volume of small tasksIn any of the cases above, it is favorable to offload the task to a thread.1) IO blocking taskWhen you read from or write to disk, depending on ho…

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Frontend and Backends Timeouts 25:23

3M ago25:23

25:23

I am fascinated by how timeouts affect backend and frontend programming. When a party is waiting on something you can place a timeout to break the wait. This is useful for freeing resources to more critical processes, detecting slow operations and even avoiding DOS attacks. Contrary to common beliefs, timeouts are not exclusive to request processin…

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Disavowing the Polythiests 57:44

3M ago57:44

57:44

Prophet Muhammad wanted to eradicate polythiesm and all practices associated with it, such as doing tawaaf around the kaaba naked. Surah Tawbah was revealed, which included a message that the idolaters should not be allowed near the kaaba after this year. The Prophet first sent Abu Bakr to share this news with the Meccans, but then God instructed h…

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Postgres is combining IO in version 17 27:39

3M ago27:39

27:39

Learn more about database and OS internals, check out my courses Fundamentals of database engineering https://databases.win Fundamentals of operating systems https://oscourse.win This new PostgreSQL 17 feature is game changer. You see, postgres like most databases work with fixed size pages. Pretty much everything is in this format, indexes, table …

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Windows vs Linux Kernel 37:23

3M ago37:23

37:23

Fundamentals of Operating Systems Course https://os.husseinnasser.comWhy Windows Kernel connects slower than Linux I explore the behavior of TCP/IP stack in Windows kernel when it receives a RST from the backend server especially when the host is available but the port we are trying to connect to is not. This behavior is exacerbated by having both …

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Running out of TCP ephemeral source ports 20:06

4M ago20:06

20:06

In this episode of the backend engineering show I describe an interesting bug I ran into where the web server ran out of ephemeral ports causing the system to halt. 0:00 Intro 0:30 System architecture 2:20 The behavior of the bug 4:00 Backend Troubleshooting 7:00 The cause 15:30 Ephemeral ports on loopback…

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Event of Mubahila 55:39

4M ago55:39

55:39

Among the delegations that came to Prophet Muhammad was on e from the Christians of Najran after their chief chief bishop and his people were invited to Islam. They came to negotiate a truce with the Prophet. They offered terms that were unacceptable to the Prophet, and he invited them to a Mubahila, a prayer for divine curse upon the liars. The Pr…

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Year of Delegations 48:17

5M ago48:17

48:17

The Expedition of Tabuk demonstrated to Arabs the strength of the Muslims. Over the next year, the various tribes responded by sending the Prophet Muhammad (pbuh) delegations to accept Islam and pledge their allegiance. Prophet Muhammmad welcomed them & forgave past conflicts. He focused on: - Renouncing idolatry & polytheism - Spreading Islamic kn…

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Masjid ad Zarar destroyed 53:58

6M ago53:58

53:58

Masjid ad Zarar, the Mosque of Harm, was a mosque built by the hypocrites of Madinah to coverty oppose the Prophet Muhammad (pbuh). They completed it just before Prophet Muhammad departed on the Expedition of Tabuk. Upon his return, Allah revealed their hypocracy in the Quran and the Prophet ordered the mosque to be destroyed. Soon after, Abdullah …

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Assassination plot at the Mountain Pass 55:10

6M ago55:10

55:10

Allah had warned Prophet Muhammad in the Quran (64:4) that his companions contained hypocrites so skilled at deceit that the prophet himself was pleased by their speech and appearance. Only revelation could expose them. Later, during the return from the Tabuk expedition, while Prophet Muhammad went through a mountain pass while instructing his army…

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Imam Ali - As Harun was to Musa | Tabuk Pt 2 56:29

7M ago56:29

56:29

When leaving for Tabuk, the Prophet (s) appointed Imam Ali (as) as his deputy in Madinah to protect against any uprising led by the Munafiqeen. Explaining it's significance, he said to Imam Ali "You are to me as Harun was to Musa, except that there is no prophet after me." There were at least 7 occasions that Prophet Muhammad made such a statement …

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io uring gets even faster 16:35

7M ago16:35

16:35

Fundamentals of Operating Systems Course https://os.husseinnasser.comLinux I/O expert and subsystem maintainer Jens Axboe has submitted all of the IO_uring feature updates ahead of the imminent Linux 6.10 merge window.In this video I explore this with a focus on what zerocopy. 0:00 Intro0:30 IO_uring gets faster 2:00 What is io_uring7:00 How Normal…

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Tabuk Part 1 - Rome Conquers Persia 55:57

7M ago55:57

55:57

This lecture covers the prelude to the Battle of Tabuk. Key topics include: - Birth of Ibrahim: Upon returning to Medina, the Prophet’s wife Mariya the Coptic gave birth to a son, named Ibrahim. The Angel Gabriel congratulated the Prophet on becoming a father. - Expedition of Tabuk: This was the last military campaign led by the Prophet. It aimed t…

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They made Python faster with this compiler option 29:04

7M ago29:04

29:04

Fundamentals of Operating Systems Course https://oscourse.winLooks like fedora is compiling cpython with the -o3 flag, which does aggressive function inlining among other optimizations.This seems to improve python benchmarks performance by at most 1.16x at a cost of an extra 3MB in binary size (text segment). Although it does seem to slow down some…

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How Apache Kafka got faster by switching ext4 to XFS 33:52

8M ago33:52

33:52

https://oscourse.win Allegro improved their Kafka produce tail latency by over 80% when they switched from ext4 to xfs. What I enjoyed most about this article is the detailed analysis and tweaking the team made to ext4 before considering switching to xfs. This is a classic case of how a good tech blog looks like in my opinion. 0:00 Intro 0:30 Summa…

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Google Patches Linux kernel with 40% TCP performance 14:24

9M ago14:24

14:24

Get my backend course https://backend.win Google submitted a patch to Linux Kernel 6.8 to improve TCP performance by 40%, this is done via rearranging the tcp structures for better cpu cache lines, I explore this here.0:00 Intro0:30 Google improves Linux Kernel TCP by 40%1:40 How CPU Cache Line Works6:45 Reviewing the Google Patchhttps://www.phoron…

1
Database Torn pages 15:33

10M ago15:33

15:33

0:00 Intro 2:00 File System Block vs Database Pages 4:00 Torn pages or partial page 7:40 How Oracle Solves torn pages 8:40 MySQL InnoDB Doublewrite buffer 10:45 Postgres Full page writes

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Cloudflare Open sources Pingora (NGINX replacement) 31:05

10M ago31:05

31:05

Get my backend course https://backend.win Cloudflare has announced they are opening sources Pingora as a networking framework! Big news, let us discuss 0:00 Intro 0:30 Reasons why Cloudflare built Pingora? 3:00 It is a framework! 7:30 What in Pingora? 11:50 Security in Pingora 13:45 Multi-threading in Pingora 21:00 Customization vs Configuration 25…

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The Siege of Ta'if 51:15

10M ago51:15

51:15

After victory against Banu Thaqif at Hunayn, Prophet Muhammad marched his army to Ta'if, where Banu Thaqif had retreated to and barricated themselves inside with enough food and water to last them for a year. The Prophet declared any slaves who joined Islam and left the fortress would be granted freedom, and many took him up on the offer. As the si…

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The Internals of MongoDB 44:57

10M ago44:57

44:57

https://backend.win https://databases.win I’m a big believer that database systems share similar core fundamentals at their storage layer and understanding them allows one to compare different DBMS objectively. For example, How documents are stored in MongoDB is no different from how MySQL or PostgreSQL store rows. Everything goes to pages of fixed…

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The Beauty of Programming Languages 18:17

10M ago18:17

18:17

In this video I explore the type of languages, compiled, garbage collected, interpreted, JIT and more.

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The Danger of Defaults - A PostgreSQL Story 11:34

10M ago11:34

11:34

I talk about default values and how PostgreSQL 14 got slower when a default parameter has changed. Mike's bloghttps://smalldatum.blogspot.com/2024/02/it-wasnt-performance-regression-in.html

1
Database Background writing 9:08

10M ago9:08

9:08

Background writing is a process that writes dirty pages in shared buffer to the disk (well goes to the OS file cache then get flushed to disk by the OS) I go into this process in this video

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The Battle of Hunain 52:01

10M ago52:01

52:01

Banu Thaqif had been long standing rivals of the Quraysh. They saw the Quraysh's defeated as an opportunity to attack and seize control of Mecca for themselves. In response, Prophet Muhammad called all Muslims to battle and led an army of 12,000 against them. Banu Thaqif's side had over 20,000. Banu Thaqif setup an ambush in the Valley of Hunain, m…

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The Cost of Memory Fragmentation 39:07

11M ago39:07

39:07

Fragmentation is a very interesting topic to me, especially when it comes to memory. While virtually memory does solve external fragmentation (you can still allocate logically contiguous memory in non-contiguous physical memory) it does however introduce performance delays as we jump all over the physical memory to read what appears to us for examp…

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The Real Hidden Cost of a Request 13:08

12M ago13:08

13:08

In this video I explore the hidden costs of sending a request from the frontend to the backend Heard https://medium.com/@hnasr/the-journey-of-a-request-to-the-backend-c3de704de223

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Converting in Droves 52:23

1y ago52:23

52:23

After the conquest of Mecca, hundreds of thousands of Arabs came to the prophet to convert and pledge their allegiance. This lecture covers why they joined now and reflects the verses of Surah An-Nasr which predicted this. The Prophet also sent various small expiditions to the surrounding tribes to invite them to Islam. The last of the pagan tribes…

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Conquest of Mecca [4] - Amnesty Granted 53:18

1y ago53:18

53:18

Prophet Muhammad destroys all the idols in the Kaaba with Imam Ali's help and washes the images that had been drawn inside. He then introduced Islam to the Meccans, discarding their ideas of nationalism and tribalism, and offered a general amnesty regardless of if they convert to Islam. Prophet Muhammad told Bilal to climb on top of the Kaaba to gi…

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Conquest of Mecca [3] - Mecca Surrenders 46:30

1y ago46:30

46:30

Prophet Muhammad had promised safety to any Meccan who either remined in their own home during the invasion or went to Abu Sufyan's home. After seeing the Muslim's strenght, Abu Sufyan saw the futility of struggle and urged the Meccans to surrender. Some Meccans remained defiant, notably his wife Hind and Ikrimah, the son of Abu Jahl. After taking …

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Conquest of Mecca [2] - Tactics and Betrayal 50:52

1y ago50:52

50:52

Prophet Muhammad kept the attack on Mecca a closely guarded secret. However Hatib ibn Abi Balta'ah sent a letter to the Quraysh warning them of the attack. The Prophet was informed of this by revelation and he sent Ali and Zubayr to retrieve it. The Muslim army eventually marched to Mecca, where they were instructed to spread out and display their …

1
Why create Index blocks writes 13:02

1y ago13:02

13:02

Fundamentals of Database Engineering udemy course (link redirects to udemy with coupon)https://database.husseinnasser.com Why create Index blocks writesIn this video I explore how create index, why does it block writes and how create index concurrently work and allow writes.0:00 Intro1:28 How Create Index works4:45 Create Index blocking Writes5:00 …

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Conquest of Mecca [1] - The Broken Treaty 44:53

1y ago44:53

44:53

The Treaty of Hudaybiyya had included a vow of there being no fighting between the Quraysh and the Muslims. However, when the tribe of Banu Bakr asked the leaders of Quraysh for help in a raid against their long time foe Banu Khuza'ah, a tribe with many Muslims and who were longtime allies of Prophet Muhammad, the Quraysh joined in. The raiders kil…

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Campaign of Dhat Al-Salasil 49:23

1y ago49:23

49:23

The Campaign of Dhat Al-Salasil occurred soon after "defeat" at the Battle of Mu'tah, when various Ghassanid affiliated tribes sensed an opportunity to invade Medina. They thought the Muslims would be weak and demoralized. A bedouin learned about the gathering army and informed Prophed Muhammad, who designated an army and commander to go fight them…

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The Problems of an HTTP/3 Backend 13:52

1y ago13:52

13:52

HTTP/3 is getting popular in the cloud scene but before you migrate to HTTP/3 consider its cost. I explore it here.0:00 Intro HTTP/3 is getting popular3:40 HTTP/1.1 Cost5:18 HTTP/2 Cost6:30 HTTP/3 Costhttps://blog.apnic.net/2023/09/25/why-http-3-is-eating-the-world/

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Encrypted Client Hello - The Pros & Cons 33:17

1y ago33:17

33:17

The Encrypted Client Hello or ECH is a new RFC that encrypts the TLS client hello to hide sensitive information like the SNI. In this video I go through pros and cons of this new rfc.0:00 Intro2:00 SNI4:00 Client Hello8:40 Encrypted Client Hello11:30 Inner Client Hello Encryption18:00 Client-Facing Outer SNI21:20 Decrypting Inner Client Hello23:30 …

1
Fighting the Roman Army 48:17

1y ago48:17

48:17

The Roman army, with 10,000 soliders, outnumbered the Muslims 3:1 at the Battle of Mutah. Some of the Muslims feared the large army and wanted to retreat, but the senior companions bolstered their courage. Prophet Muhammad had appointed a leader for the army, with two backup leaders in case the first one was martyred. This was a hard battle. Jaffer…

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