Source:<\/p>\n
When building high-performance systems, minimizing expensive operations like disk reads or remote database queries is critical.<\/p>\n
A Bloom filter is a highly space-efficient, probabilistic data structure designed to test whether an element is a member of a set. It was conceived by Burton Howard Bloom in 1970.<\/p>\n
Unlike standard data structures like hash tables or binary search trees that store the actual data, a Bloom filter only stores a cryptographic representation of the data. Because it does not store the raw elements, it requires a fraction of the memory.<\/p>"},{"title":"A clumsy Docker network notes","link":"https:\/\/ntk148v.github.io\/posts\/clumsy-docker-network-notes\/","pubDate":"Tue, 12 Dec 2023 14:47:26 +0700","author":"kiennt2609@gmail.com (Kien Nguyen-Tuan)","guid":"https:\/\/ntk148v.github.io\/posts\/clumsy-docker-network-notes\/","description":"
Ngu\u1ed3n:<\/p>\n
C\u00e1c kh\u00e1i ni\u1ec7m:<\/p>\n
Network namespace<\/a>:<\/p>\n Network bridge<\/a>: m\u1ed9t thi\u1ebft b\u1ecb m\u1ea1ng \u1ea3o chuy\u1ec3n ti\u1ebfp c\u00e1c g\u00f3i gi\u1eefa hai ho\u1eb7c nhi\u1ec1u ph\u00e2n \u0111o\u1ea1n m\u1ea1ng.<\/p>"},{"title":"Writing a Simple Shell in C Sharp","link":"https:\/\/ntk148v.github.io\/posts\/writing-a-simple-shell-in-c-sharp\/","pubDate":"Sun, 20 Aug 2023 23:15:34 +0700","author":"kiennt2609@gmail.com (Kien Nguyen-Tuan)","guid":"https:\/\/ntk148v.github.io\/posts\/writing-a-simple-shell-in-c-sharp\/","description":" In this post, we will write a minimalistic shell for UNIX(-like) operating systems in C# programming language. I create this for learning C# purpose.<\/p>\n Since its purpose demonstration (not feature completeness or even fitness for causual use), it has many limitations, including:<\/p>\n Before we start, make sure you have .NET Core environment and knownledge.<\/p>"},{"title":"Golang Async","link":"https:\/\/ntk148v.github.io\/posts\/golang-async\/","pubDate":"Fri, 21 Jul 2023 16:16:31 +0700","author":"kiennt2609@gmail.com (Kien Nguyen-Tuan)","guid":"https:\/\/ntk148v.github.io\/posts\/golang-async\/","description":" This article is Golang version of Asynchronous programming with async and await guideline<\/a>. They did really good job to demonstrate how asynchronous programming looks like.<\/p>\n You can find source code here<\/a>.<\/p>\n<\/blockquote>\n Throughout this article, we’ll write the instructions to make a breakfast.<\/p>\n Each step takes time to finish, for example, you have to wait X seconds to make a glass of orange juice. Let’s write those instructions as Golang:<\/p>"},{"title":"Linux Run in the Background","link":"https:\/\/ntk148v.github.io\/posts\/linux-run-in-the-background\/","pubDate":"Fri, 03 Mar 2023 14:28:09 +0700","author":"kiennt2609@gmail.com (Kien Nguyen-Tuan)","guid":"https:\/\/ntk148v.github.io\/posts\/linux-run-in-the-background\/","description":" Environment:<\/strong> Ubuntu 22.04, but it should work in other Linux distributions.<\/p>\n Source<\/strong>: https:\/\/www.sobyte.net\/post\/2023-03\/linux-services-in-the-background\/<\/a><\/p>\n<\/blockquote>\n You run some commands, it may take a long time to execute, and you don’t want to wait for it. So what should you do in that scenario?<\/p>\n For example, you have to excute The following content is from my #til github<\/a>.<\/p>\n<\/blockquote>\n Source:<\/strong><\/p>\n Source:<\/p>\n https:\/\/blog.packagecloud.io\/illustrated-guide-monitoring-tuning-linux-networking-stack-receiving-data\/<\/a><\/p>\n<\/li>\n https:\/\/blog.packagecloud.io\/monitoring-tuning-linux-networking-stack-receiving-data\/<\/a><\/p>\n<\/li>\n https:\/\/blog.packagecloud.io\/monitoring-tuning-linux-networking-stack-sending-data\/<\/a><\/p>\n<\/li>\n https:\/\/www.sobyte.net\/post\/2022-10\/linux-net-snd-rcv\/<\/a><\/p>\n<\/li>\n https:\/\/juejin.cn\/post\/7106345054368694280<\/a><\/p>\n<\/li>\n https:\/\/openwrt.org\/docs\/guide-developer\/networking\/praxis<\/a><\/p>\n<\/li>\n https:\/\/blog.51cto.com\/u_15169172\/2710604<\/a><\/p>\n<\/li>\n https:\/\/sn0rt.github.io\/media\/paper\/TCPlinux.pdf<\/a><\/p>\n<\/li>\n https:\/\/medium.com\/coccoc-engineering-blog\/linux-network-ring-buffers-cea7ead0b8e8<\/a><\/p>\n<\/li>\n The complete network data flow:<\/p>\n<\/li>\n<\/ul>\n NOTE<\/strong>: The follow sections will heavily use \n
$ sudo ip netns <sub-command>\n<\/span><\/span><\/code><\/pre><\/div><\/li>\n\n
\n
\n
1. Pour a cup of coffee.\n<\/span><\/span>2. Heat a pan, then fry two eggs.\n<\/span><\/span>3. Fry three slices of bacon.\n<\/span><\/span>4. Toast two pieces of bread.\n<\/span><\/span>5. Add butter and jam to the toast.\n<\/span><\/span>6. Pour a glass of orange juice.\n<\/span><\/span><\/code><\/pre><\/div>\n
graph TD\n<\/span><\/span>A(You don't want to wait <br>for a running command) --> B{Do you want to see output?}\n<\/span><\/span>A --> C{Do you want the command to stay <br>running after the session ends?}\n<\/span><\/span>C --> |Yes| E(screen)\n<\/span><\/span>B --> |No| D(Ctrl-Z or &)\n<\/span><\/span>B --> |Yes| F{Do you have requirements <br>for log cutting, running users?}\n<\/span><\/span>F --> |No| G(nohup)\n<\/span><\/span>F --> |Yes| H(supervisor or systemd)\n<\/span><\/span><\/code><\/pre><\/div>Ctrl-Z or &<\/h2>\n
ping<\/code> command:<\/p>"},{"title":"Linux Network Performance Ultimate Guide","link":"https:\/\/ntk148v.github.io\/posts\/linux-network-performance-ultimate-guide\/","pubDate":"Fri, 24 Feb 2023 17:22:02 +0700","author":"kiennt2609@gmail.com (Kien Nguyen-Tuan)","guid":"https:\/\/ntk148v.github.io\/posts\/linux-network-performance-ultimate-guide\/","description":"\n
\n
Linux Networking stack<\/h2>\n
\n
\n
sysctl<\/code>. If you don’t familiar with this command, take a look at HOWTO#sysctl section<\/a>.<\/p>"},{"title":"Goat Playground","link":"https:\/\/ntk148v.github.io\/posts\/goat-playground\/","pubDate":"Tue, 31 Jan 2023 14:15:12 +0700","author":"kiennt2609@gmail.com (Kien Nguyen-Tuan)","guid":"https:\/\/ntk148v.github.io\/posts\/goat-playground\/","description":"