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Dr Milan Milanović

@milan_milanovic63k followers

Helping 400K+ engineers and leaders grow through better software, teams & careers | Author of @SoftwareEngLaws | CTO | Microsoft MVP

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1Jun 23, '24This is a success!47.1×1.1M9.1k805754
2Oct 10, '23𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸 𝗰𝗿𝗲𝗮𝘁𝗲𝗱 𝗮 𝘁𝗼𝗼𝗹 𝘄𝗵𝗶𝗰𝗵 𝗱𝗲𝘁𝗲𝗰𝘁 𝗮𝗻𝗱 𝗿𝗲𝗽𝗮𝗶𝗿 𝗯𝘂𝗴𝘀 𝗮𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗰𝗮𝗹𝗹𝘆 The recent document by engineers from Facebook explains 46.8×1.1M4.8k7403.7k
3Oct 14, '23𝗧𝗼𝗽 𝟮𝟬 𝗦𝗤𝗟 𝗾𝘂𝗲𝗿𝘆 𝗼𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝘁𝗲𝗰𝗵𝗻𝗶𝗾𝘂𝗲𝘀 Here is the list of the top 20 SQL query optimization techniques I found noteworthy: 1. Create an index 41.8×984k8.1k1.6k8.3k
4Jul 27, '23𝗗𝗲𝘃𝗢𝗽𝘀 𝗮𝘀 𝗮 𝗕𝘂𝗿𝗴𝗲𝗿 (𝗗𝗮𝗮𝗕) What should the DevOps engineer roadmap look like: 𝟭. 𝗟𝗲𝗮𝗿𝗻 𝗮 𝗽𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 𝗹𝗮𝗻𝗴𝘂𝗮𝗴𝗲 (Python, Go, ...) to write35.1×825k5.9k1.3k5.2k
5Aug 27, '23𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 != 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 Software Engineer == Problem Solver Don't attack problems with code. Try first to understand them from a business perspectiv33.7×792k5.4k9421.4k
6Jul 14, '24Design Patterns Cheat Sheet19.9×468k2.8k4335.6k
7Feb 5, '24𝗪𝗵𝘆 𝗱𝗼𝗲𝘀 𝗚𝗼𝗼𝗴𝗹𝗲 𝗿𝗲𝗰𝗼𝗺𝗺𝗲𝗻𝗱 𝗠𝗼𝗱𝘂𝗹𝗮𝗿 𝗠𝗼𝗻𝗼𝗹𝗶𝘁𝗵𝘀 𝗶𝗻𝘀𝘁𝗲𝗮𝗱 𝗼𝗳 𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀? In the last decade, we have seen a massive trend o19.5×459k3.4k7624.2k
8Jul 5, '23𝗪𝗵𝘆 𝗚𝗼𝗼𝗴𝗹𝗲 𝗦𝘁𝗼𝗿𝗲𝘀 𝗕𝗶𝗹𝗹𝗶𝗼𝗻𝘀 𝗼𝗳 𝗟𝗶𝗻𝗲𝘀 𝗼𝗳 𝗖𝗼𝗱𝗲 𝗶𝗻 𝗮 𝗦𝗶𝗻𝗴𝗹𝗲 𝗥𝗲𝗽𝗼𝘀𝗶𝘁𝗼𝗿𝘆 Google’s monolithic repository provides a common source of19.5×459k1.8k3671.4k
9Oct 13, '23𝗦𝘁𝗮𝗰𝗸 𝗢𝘃𝗲𝗿𝗳𝗹𝗼𝘄 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗜𝘀 𝗡𝗼𝘁 𝗪𝗵𝗮𝘁 𝗬𝗼𝘂 𝗠𝗲𝗮𝗻 𝗜𝘁 𝗜𝘀 In the recent interview with Scott Hanselman, 𝗥𝗼𝗯𝗲𝗿𝘁𝗮 𝗔𝗿𝗰𝗼𝘃𝗲𝗿𝗱𝗲,18.7×440k2.4k4131.5k
10Oct 7, '23𝗪𝗵𝗮𝘁 𝗶𝘀 𝘁𝗵𝗲 𝗗𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝗰𝗲 𝗕𝗲𝘁𝘄𝗲𝗲𝗻 𝗜𝗻𝗻𝗲𝗿, 𝗟𝗲𝗳𝘁, 𝗥𝗶𝗴𝗵𝘁, 𝗮𝗻𝗱 𝗙𝘂𝗹𝗹 𝗝𝗼𝗶𝗻? 🔹 (INNER) JOIN - return all rows with matching values in both 18.4×433k3.1k6452.7k
11Oct 15, '23𝗛𝗼𝘄 𝘁𝗼 𝗯𝗲 𝗮 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝘃𝗶𝘁𝘆 𝗺𝗮𝘀𝘁𝗲𝗿? Use a few simple techniques: 1. Focus on ONE thing. Block your time in the calendar for everything and try to focus on th18×424k2.8k5523.6k
12Oct 23, '23𝗦𝗵𝗼𝗽𝗶𝗳𝘆 𝘀𝗲𝗿𝘃𝗲𝗱 𝟭.𝟮𝟳 𝗠𝗶𝗹𝗹𝗶𝗼𝗻 𝗿𝗲𝗾𝘂𝗲𝘀𝘁𝘀 𝗽𝗲𝗿 𝘀𝗲𝗰𝗼𝗻𝗱 𝗼𝗻 𝗮 𝗺𝗼𝗻𝗼𝗹𝗶𝘁𝗵 You probably think that such a large amount of requests can be only16.7×393k1.1k177934
13Aug 22, '23𝗗𝗲𝗳𝗶𝗻𝗶𝗻𝗴, 𝗠𝗲𝗮𝘀𝘂𝗿𝗶𝗻𝗴, 𝗮𝗻𝗱 𝗠𝗮𝗻𝗮𝗴𝗶𝗻𝗴 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗗𝗲𝗯𝘁 𝗯𝘆 𝗚𝗼𝗼𝗴𝗹𝗲 In the latest paper by Google Engineers, they researched how to define, 16.3×383k2.3k5172.7k
14Oct 11, '23𝗪𝗵𝗶𝗰𝗵 𝗰𝗹𝗼𝘂𝗱 𝗽𝗿𝗼𝘃𝗶𝗱𝗲𝗿 𝘀𝗵𝗼𝘂𝗹𝗱 𝗯𝗲 𝘂𝘀𝗲𝗱 𝘄𝗵𝗲𝗻 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗮 𝗯𝗶𝗴 𝗱𝗮𝘁𝗮 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻? The diagram below illustrates the detailed comparis16.2×381k2.3k5072.2k
15Jun 2, '23𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝗢𝗳𝗳𝗲𝗿𝘀 𝗙𝗿𝗲𝗲 𝗔𝗜, 𝗠𝗮𝗰𝗵𝗶𝗻𝗲 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴, 𝗮𝗻𝗱 𝗗𝗮𝘁𝗮 𝗦𝗰𝗶𝗲𝗻𝗰𝗲 𝗰𝗼𝘂𝗿𝘀𝗲𝘀 Recently Microsft created a comprehensive suite of cou16.2×380k2.3k6743.2k
16Oct 29, '23𝗛𝗼𝘄 𝘁𝗼 𝗟𝗲𝗮𝗿𝗻 𝗦𝘆𝘀𝘁𝗲𝗺 𝗗𝗲𝘀𝗶𝗴𝗻? If you're working as a software developer and you want to move towards a software architect role, or you're preparing for coding i15.9×373k3.2k6844.3k
17Nov 2, '23𝗪𝗵𝗮𝘁 𝗶𝘀 𝘁𝗵𝗲 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝗰𝗲 𝗯𝗲𝘁𝘄𝗲𝗲𝗻 𝗠𝗩𝗖, 𝗠𝗩𝗣, 𝗠𝗩𝗜, 𝗠𝗩𝗩𝗠, 𝗠𝗩𝗩𝗠-𝗖, 𝗮𝗻𝗱 𝗩𝗜𝗣𝗘𝗥 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗽𝗮𝘁𝘁𝗲𝗿𝗻𝘀? Here is the lis14.5×341k2k4551.8k
18Oct 7, '24𝗔𝗣𝗜 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗥𝗼𝗮𝗱𝗺𝗮𝗽 Whether you're a beginner or an experienced developer looking to learn about API, this comprehensive API learning roadmap will guide you thro13×305k2.9k5745k
19Sep 3, '23𝗔 𝗹𝗶𝘀𝘁 𝗼𝗳 𝗵𝗲𝗹𝗽𝗳𝘂𝗹 𝘁𝗼𝗼𝗹𝘀 𝗶𝗻 𝗮 𝗟𝗶𝗻𝘂𝘅 𝘀𝘆𝘀𝘁𝗲𝗺 🔹𝗽𝗶𝗱𝘀𝘁𝗮𝘁 - monitors how much of the system's resources—such as CPU, memory, device IO, task switc12.4×292k1.9k4072.2k
20Sep 2, '23𝗟𝗶𝗻𝘂𝘅 𝗖𝗼𝗺𝗺𝗮𝗻𝗱𝘀 A nice overview of all Linux commands, such as: • Basic File Operations: ls, cp, mv, rm, ... • File Viewing: cat, less, head, tail, nl, ... • Dates and 12.3×289k2.1k4132.2k
21Nov 19, '23𝗪𝗵𝗮𝘁 𝗶𝘀 𝗮𝗻 𝗔𝗣𝗜 𝗚𝗮𝘁𝗲𝘄𝗮𝘆? An API management tool known as an 𝗔𝗣𝗜 𝗴𝗮𝘁𝗲𝘄𝗮𝘆 sits between a client and a group of backend services. It performs the function o12.1×285k1.4k2691.4k
22Oct 16, '23𝗔 𝗩𝗶𝘀𝘂𝗮𝗹 𝗚𝘂𝗶𝗱𝗲 𝗢𝗻 𝗛𝗼𝘄 𝗧𝗼 𝗖𝗵𝗼𝗼𝘀𝗲 𝗧𝗵𝗲 𝗥𝗶𝗴𝗵𝘁 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 With so many options around, choosing a suitable data store can be confusing. This diagr11.7×276k1.9k4241.9k
23Sep 26, '23𝗪𝗵𝗮𝘁 𝗘𝘃𝗲𝗿𝘆 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗲𝗿 𝗦𝗵𝗼𝘂𝗹𝗱 𝗞𝗻𝗼𝘄 𝗔𝗯𝗼𝘂𝘁 𝗠𝗲𝗺𝗼𝗿𝘆 Check out this great manuscript by Ulrich Drepper, which delves deep into computer memory sys11.7×276k1.9k4202.8k
24Jul 8, '23𝗦𝗼𝗺𝗲 𝗶𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁 𝗹𝗲𝗮𝗿𝗻𝗶𝗻𝗴𝘀 𝗳𝗿𝗼𝗺 𝗺𝘆 𝟮𝟬 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗹𝗶𝗳𝗲 𝟭. 𝗗𝗼𝗻'𝘁 𝗱𝗼 𝗽𝗿𝗲𝗺𝗮𝘁𝘂𝗿𝗲 𝗼𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 You11.5×271k1.2k238978
25Nov 12, '23𝗟𝗲𝗮𝗿𝗻 𝗳𝘂𝗻𝗱𝗮𝗺𝗲𝗻𝘁𝗮𝗹𝘀 𝗻𝗼𝘁 𝗳𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀 We, as developers, like to learn new stuff and try it ASAP. That stuff is mostly some new frameworks and tools (such11.3×265k2.5k4792.4k
26Oct 5, '23SQLFlow - a great tool to visualize SQL queries. #technology #sql #data #programming10.9×256k2k4291.8k
27Sep 5, '23𝗕𝗼𝗼𝗸𝘀 𝗘𝘃𝗲𝗿𝘆 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝗠𝘂𝘀𝘁 𝗥𝗲𝗮𝗱 𝗶𝗻 𝟮𝟬𝟮𝟯. You probably already noticed that I'm a big fan of reading. I usually read 3-4 books per mo10.8×254k2.1k4482.7k
28Jul 5, '23𝗛𝗼𝘄 𝗧𝗼 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗲 𝗬𝗼𝘂𝗿 𝗦𝗤𝗟 𝗤𝘂𝗲𝗿𝗶𝗲𝘀? To do this, you need first to understand the execution order of an SQL query. SQL statements are executed in multiple s10.8×254k1.7k3641.8k
29Feb 17, '24𝗧𝗼𝗽 𝟮𝟬 𝗦𝗤𝗟 𝗾𝘂𝗲𝗿𝘆 𝗼𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝘁𝗲𝗰𝗵𝗻𝗶𝗾𝘂𝗲𝘀 Here is the list of the top 20 SQL query optimization techniques I found noteworthy: 1. Create an index 10.6×250k3k6604.1k
30Nov 21, '23𝗪𝗲 𝗮𝗿𝗲 𝘀𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝘀, 𝗻𝗼𝘁 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿𝘀 What does this mean? This means that 𝘆𝗼𝘂𝗿 𝗷𝗼𝗯 𝗶𝘀 𝗻𝗼𝘁 𝘁𝗼 𝗰𝗼𝗱𝗲 𝗯𝘂𝘁 𝘁𝗼 𝘀𝗼𝗹𝘃𝗲 �10.4×245k1.5k292893
31Jul 18, '23𝗗𝗼 𝗬𝗼𝘂 𝗡𝗲𝗲𝗱 𝗧𝗼 𝗞𝗻𝗼𝘄 𝗔𝗹𝗹 𝗗𝗲𝘀𝗶𝗴𝗻 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀? The answer is no. Even though we have 23 design patterns, around ten are mostly used in everyday developmen10.4×244k2.3k5812.4k
32Oct 19, '23𝗗𝗲𝘀𝗶𝗴𝗻 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀 𝗖𝗵𝗲𝗮𝘁 𝗦𝗵𝗲𝗲𝘁 Design patterns can be divided into three main types: 𝟭. 𝗖𝗿𝗲𝗮𝘁𝗶𝗼𝗻𝗮𝗹 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀 These design patterns deal with 10.0×234k2k4122.3k
33Aug 10, '24Linux CRON Cheatsheet9.7×228k1.9k2871.5k
34Nov 25, '23𝗪𝗵𝗮𝘁 𝗜 𝗟𝗲𝗮𝗿𝗻𝗲𝗱 𝗙𝗿𝗼𝗺 𝗧𝗵𝗲 𝗕𝗼𝗼𝗸 "𝗣𝗿𝗮𝗴𝗺𝗮𝘁𝗶𝗰 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗲𝗿" One book I always recommend to developers is "Pragmatic Programmer" by David Thomas an9.2×218k1.1k1901.1k
35Sep 3, '23𝗧𝗼𝗽 𝟮𝟬 𝗦𝗤𝗟 𝗤𝘂𝗲𝗿𝘆 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝗧𝗲𝗰𝗵𝗻𝗶𝗾𝘂𝗲𝘀 Here is the list of the top 20 SQL query optimization techniques I found noteworthy: 1. Create an index 9.0×211k1.5k3952k
36Jul 4, '23𝗪𝗵𝗮𝘁 𝗶𝘀 𝘁𝗵𝗲 𝗧𝘄𝗲𝗹𝘃𝗲-𝗙𝗮𝗰𝘁𝗼𝗿 𝗔𝗽𝗽? Describes many well-tested architectural patterns and best practices for software-as-a-service (SaaS) applications. When apps8.9×210k1.1k2291.3k
37May 29, '23𝗔𝗣𝗜 𝗚𝗮𝘁𝗲𝘄𝗮𝘆 𝘃𝘀 𝗟𝗼𝗮𝗱 𝗕𝗮𝗹𝗮𝗻𝗰𝗲𝗿 Regarding a system design, we often need clarification about the roles of a Load Balancer and an API Gateway. Most of our resou8.8×206k1.5k286956
38Jul 12, '24Friday Developers Fun 🤣 PMs are crucial! #developers #softwareengineering #meme #fridayhumor8.5×200k2k380818
39Oct 29, '23𝗔𝗣𝗜 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗧𝘆𝗽𝗲𝘀 API (Application Programming Interface) is an interface that enables software applications to communicate with each other by defining a s8.4×198k2.1k4891.8k
40Feb 2, '24Friday Developers Fun 🤣 Do you push to production on Friday? #meme #fridayhumor8.3×195k1.6k275278
41Oct 17, '23𝗠𝗼𝘀𝘁 𝗖𝗼𝗺𝗺𝗼𝗻 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗦𝘁𝘆𝗹𝗲𝘀 Software architecture styles are the foundational blueprints for constructing various software systems,8.2×193k1k1781.2k
42Aug 3, '23𝗪𝗵𝗮𝘁 𝗶𝘀 𝗮𝗻 𝗔𝗣𝗜 𝗚𝗮𝘁𝗲𝘄𝗮𝘆? An API management tool known as an 𝗔𝗣𝗜 𝗴𝗮𝘁𝗲𝘄𝗮𝘆 sits between a client and a group of backend services. It performs the function o8.1×190k1.4k3011.1k
43Aug 25, '23Summer will still be hot 🔥! #learning #books #softwareengineering8.0×188k1.7k165997
44May 19, '25𝗔𝗜 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝘃𝗶𝘁𝘆 𝗧𝗼𝗼𝗹𝘀 I organized a list of 100+ tools that can save you weekly hours, across categories like writing, spreadsheets, design, and coding. 📌 Bookm7.8×183k1.4k2832.6k
45Oct 21, '23𝗪𝗵𝗮𝘁 𝗶𝘀 𝗮𝗻 𝗔𝗣𝗜 𝗚𝗮𝘁𝗲𝘄𝗮𝘆? An API management tool known as an 𝗔𝗣𝗜 𝗴𝗮𝘁𝗲𝘄𝗮𝘆 sits between a client and a group of backend services. It performs the function o7.7×181k1.3k2571.1k
46Sep 18, '23𝗪𝗵𝗮𝘁 𝗶𝘀 𝗘𝗧𝗟? Extract, Transform, Load (ETL) is a data integration process that involves: 𝟭. 𝗘𝘅𝘁𝗿𝗮𝗰𝘁: This step involves extracting data from various heterogeneous 7.7×180k1.1k241880
47Sep 24, '24𝗔 𝘃𝗶𝘀𝘂𝗮𝗹 𝗴𝘂𝗶𝗱𝗲 𝗼𝗻 𝗵𝗼𝘄 𝘁𝗼 𝗰𝗵𝗼𝗼𝘀𝗲 𝘁𝗵𝗲 𝗿𝗶𝗴𝗵𝘁 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 With so many options, choosing the right data store can be confusing. This diagram shows7.4×173k1.4k2502.4k
48Aug 15, '23𝗟𝗮𝘁𝗲𝗻𝗰𝘆 𝗡𝘂𝗺𝗯𝗲𝗿𝘀 𝗘𝘃𝗲𝗿𝘆 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗲𝗿 𝗦𝗵𝗼𝘂𝗹𝗱 𝗞𝗻𝗼𝘄 Check the main latency numbers: L1 cache reference ......................... 0.5 ns Branch mispr7.3×172k1k185927
49Jul 20, '23𝗪𝗵𝗮𝘁 𝗶𝘀 𝗖𝗿𝗼𝘀𝘀-𝗢𝗿𝗶𝗴𝗶𝗻 𝗥𝗲𝘀𝗼𝘂𝗿𝗰𝗲 𝗦𝗵𝗮𝗿𝗶𝗻𝗴 (𝗖𝗢𝗥𝗦)? Browsers use CORS to prevent websites from requesting data from different URLs. A request from a b7.2×170k1.4k3511.1k
50Jul 20, '24𝗛𝗼𝘄 𝗱𝗼 𝘄𝗲 𝗱𝗲𝗽𝗹𝗼𝘆 𝘀𝗮𝗳𝗲𝗹𝘆 𝗼𝗻 𝗙𝗿𝗶𝗱𝗮𝘆𝘀? You probably saw the massive outage on Windows systems caused by one CrowdStrike module update. The question is how 7.1×166k1.1k2491.1k
51Dec 1, '23Friday Developers Fun 🤣 PMs are crucial! #developers #softwareengineering #meme #fridayhumor6.9×162k1.8k413402
52Oct 24, '23𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗮𝘀 𝗖𝗼𝗱𝗲 We’re seeing more tools enabling you to create software architecture and other diagrams as code. The main benefit of using this concept is th6.7×157k1.6k4001.3k
53Oct 17, '24𝗟𝗲𝗮𝗿𝗻 𝗳𝘂𝗻𝗱𝗮𝗺𝗲𝗻𝘁𝗮𝗹𝘀 𝗻𝗼𝘁 𝗳𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀 We developers like to learn new stuff and try it ASAP. That stuff consists mainly of new frameworks and tools (such 6.7×157k2.3k3102.6k
54Nov 18, '23𝗦𝗤𝗟 𝗕𝗮𝘀𝗶𝗰𝘀 𝗖𝗵𝗲𝗮𝘁 𝗦𝗵𝗲𝗲𝘁 A great SQL Cheat Sheet by LearnSQL .com. 🧵 #softwareengineering #sql #data6.6×155k977205888
55Jul 11, '23𝗪𝗵𝗮𝘁 𝗵𝗮𝗽𝗽𝗲𝗻𝘀 𝘄𝗵𝗲𝗻 𝘆𝗼𝘂 𝘁𝘆𝗽𝗲 𝗮 𝗨𝗥𝗟 𝗶𝗻𝘁𝗼 𝘆𝗼𝘂𝗿 𝗯𝗿𝗼𝘄𝘀𝗲𝗿? The process involves the browser, your computer’s operating system, your internet servi6.5×153k1.3k3161k
56Oct 15, '25𝗪𝗵𝘆 𝗚𝗼𝗼𝗴𝗹𝗲 𝗦𝘁𝗼𝗿𝗲𝘀 𝗕𝗶𝗹𝗹𝗶𝗼𝗻𝘀 𝗼𝗳 𝗟𝗶𝗻𝗲𝘀 𝗼𝗳 𝗖𝗼𝗱𝗲 𝗶𝗻 𝗮 𝗦𝗶𝗻𝗴𝗹𝗲 𝗥𝗲𝗽𝗼𝘀𝗶𝘁𝗼𝗿𝘆 Google’s monolithic repository serves as a single source o6.5×152k1.5k1961.5k
57Oct 22, '23𝗧𝗼𝗽 𝟭𝟬 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗮𝗹 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 is the process of designing the structure and behavior of a software system, which6.2×147k1.2k2791.2k
58Nov 15, '23𝗬𝗼𝘂𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗜𝘀 𝗔𝗹𝘄𝗮𝘆𝘀 𝗖𝗼𝗺𝗽𝗹𝗲𝘅 𝗔𝘀 𝗬𝗼𝘂𝗿 𝗢𝗿𝗴𝗮𝗻𝗶𝘇𝗮𝘁𝗶𝗼𝗻 Have you heard about 𝗖𝗼𝗻𝘄𝗮𝘆'𝘀 𝗟𝗮𝘄? It is a theo6.2×147k1k254607
59Dec 8, '23𝗙𝗥𝗘𝗘 𝗘-𝗕𝗢𝗢𝗞: 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗮𝘁 𝗚𝗼𝗼𝗴𝗹𝗲 The Software Engineering at Google book is not about programming, per se, but about the engineering 6.1×145k1.2k3201.2k
60Sep 4, '23𝗛𝗼𝘄 𝘁𝗼 𝗹𝗲𝗮𝗿𝗻 𝗦𝗤𝗟? Structured Query Language (SQL) is a domain-specific language used in programming and designed for managing data held in relational database manageme5.9×139k1k2491.3k
61Oct 28, '23𝗪𝗵𝗮𝘁 𝗶𝘀 𝗖𝗿𝗼𝘀𝘀-𝗢𝗿𝗶𝗴𝗶𝗻 𝗥𝗲𝘀𝗼𝘂𝗿𝗰𝗲 𝗦𝗵𝗮𝗿𝗶𝗻𝗴 (𝗖𝗢𝗥𝗦)? Browsers use CORS, a method, to prevent websites from requesting data from different URLs. A reque5.8×137k1.2k2511.1k
62Oct 19, '23𝗪𝗵𝘆 𝗬𝗼𝘂 𝗡𝗲𝗲𝗱 𝗧𝗼 𝗞𝗻𝗼𝘄 𝗥𝗲𝗱𝗶𝘀? Redis is an open-source, in-memory data structure store used as a cache in front of another database. It supports various data stru5.7×135k962211960
63Jan 2, '24𝗪𝗵𝗮𝘁 𝗜 𝗹𝗲𝗮𝗿𝗻𝗲𝗱 𝗳𝗿𝗼𝗺 𝘁𝗵𝗲 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲: 𝗧𝗵𝗲 𝗛𝗮𝗿𝗱 𝗣𝗮𝗿𝘁𝘀 I recently read the book "𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲5.7×134k1.6k2831.3k
64Oct 21, '23𝗪𝗵𝗮𝘁 𝗮𝗿𝗲 𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀? Deployment patterns are automated methods of introducing new application features to your users. Your ability to cut downtime5.6×131k1.2k2601.1k
65Aug 28, '23𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗥𝗘𝗦𝗧 𝗛𝗲𝗮𝗱𝗲𝗿𝘀 The Hypertext Transfer Protocol (HTTP) header is a component of HTTP and transmits extra data during HTTP requests and responses.5.5×130k1.2k237820
66Feb 7, '24𝗗𝗲𝗳𝗶𝗻𝗶𝗻𝗴, 𝗠𝗲𝗮𝘀𝘂𝗿𝗶𝗻𝗴, 𝗮𝗻𝗱 𝗠𝗮𝗻𝗮𝗴𝗶𝗻𝗴 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗗𝗲𝗯𝘁 𝗯𝘆 𝗚𝗼𝗼𝗴𝗹𝗲 In the latest paper by Google Engineers, they researched how to define, 5.5×129k1k2371.6k
67Aug 3, '25𝗔𝗣𝗜 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗥𝗼𝗮𝗱𝗺𝗮𝗽 Whether you're a beginner or an experienced developer looking to learn about API, this comprehensive API learning roadmap will guide you thro5.4×128k1.5k3051.8k
68Feb 5, '23To replace programmers with AI, clients will need to accurately describe what they want. We’re safe. #softwareengineering #programming5.4×128k1.2k50079
69Oct 22, '23𝗔𝗣𝗜 𝗚𝗮𝘁𝗲𝘄𝗮𝘆 𝘃𝘀 𝗟𝗼𝗮𝗱 𝗕𝗮𝗹𝗮𝗻𝗰𝗲𝗿 Regarding a system design, we often see confusion about the roles of a Load Balancer and an API Gateway. Most of our resources 5.2×122k1.1k247740
70Aug 17, '25Most of the people who think that AI will replace developers are: - Managers who don’t code - Investors and startup founders selling it - People outside tech Developers: "It's help5.2×121k3k240238
71Oct 23, '25Software engineers, let's connect!5.1×121k2.5k90121
72Aug 4, '24𝗕𝗼𝗼𝗸𝘀 𝗘𝘃𝗲𝗿𝘆 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝗠𝘂𝘀𝘁 𝗥𝗲𝗮𝗱 𝗶𝗻 𝟮𝟬𝟮𝟰. You probably already noticed that I'm a big fan of reading. I usually read 3-4 books per mo5.1×120k1.3k2402.5k
73Mar 18, '25𝗔𝗣𝗜 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗥𝗼𝗮𝗱𝗺𝗮𝗽 Whether you're a beginner or an experienced developer looking to learn about API, this comprehensive API learning roadmap will guide you thro4.9×116k1.5k2951.9k
74Sep 14, '25Software engineers, let’s connect!4.8×113k2.4k93194
75Nov 8, '23𝗛𝗼𝘄 𝘁𝗼 𝗱𝗼 𝗺𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗽𝗿𝗼𝗽𝗲𝗿𝗹𝘆? 𝗦𝗲𝗹𝗳-𝗰𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗱 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 (𝗦𝗖𝗦) is a software architecture approach that 4.8×112k1k245758
76May 8, '24𝗟𝗲𝗮𝗿𝗻 𝗳𝘂𝗻𝗱𝗮𝗺𝗲𝗻𝘁𝗮𝗹𝘀 𝗻𝗼𝘁 𝗳𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀 We, as developers, like to learn new stuff and try it ASAP. That stuff consists mainly of new frameworks and tools (4.8×112k1.4k2461.8k
77Nov 30, '23𝗗𝗼 𝗬𝗼𝘂 𝗡𝗲𝗲𝗱 𝗧𝗼 𝗞𝗻𝗼𝘄 𝗔𝗹𝗹 𝗗𝗲𝘀𝗶𝗴𝗻 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀? The answer is no. Even though we have 23 design patterns, around 10 are mostly used in everyday development4.7×110k1.2k2841.2k
78Sep 17, '24𝗗𝗲𝘃𝗢𝗽𝘀 𝗮𝘀 𝗮 𝗕𝘂𝗿𝗴𝗲𝗿 (𝗗𝗮𝗮𝗕) What should the DevOps engineer roadmap look like: 𝟭. 𝗟𝗲𝗮𝗿𝗻 𝗮 𝗽𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 𝗹𝗮𝗻𝗴𝘂𝗮𝗴𝗲 (Python, Go, ...) to write4.6×107k1.2k2091.4k
79Oct 23, '23𝗪𝗵𝗮𝘁 𝗶𝘀 𝗔𝗣𝗜? "Application Programming Interface," or API, refers to a communication channel between various software services. Applications that transmit requests and resp4.5×107k1k248598
80Jan 3, '24𝗦𝘆𝘀𝘁𝗲𝗺 𝗗𝗲𝘀𝗶𝗴𝗻: 𝗛𝗼𝘄 𝘁𝗼 𝗗𝗲𝘀𝗶𝗴𝗻 𝗜𝗻𝘀𝘁𝗮𝗴𝗿𝗮𝗺 In this post, we continue with the system design series. Let's first discuss the requirements: 𝟭. 𝗥𝗲𝗾𝘂𝗶4.5×105k1.2k2551.3k
81Oct 9, '25𝗪𝗵𝗮𝘁 𝗜 𝗹𝗲𝗮𝗿𝗻𝗲𝗱 𝗳𝗿𝗼𝗺 𝘁𝗵𝗲 𝗯𝗼𝗼𝗸 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗮𝘁 𝗚𝗼𝗼𝗴𝗹𝗲 The book is not about programming, per se, but about the engineering p4.3×101k1.5k1861.7k
82Jun 27, '23𝗔 𝗩𝗶𝘀𝘂𝗮𝗹 𝗚𝘂𝗶𝗱𝗲 𝗢𝗻 𝗛𝗼𝘄 𝗧𝗼 𝗖𝗵𝗼𝗼𝘀𝗲 𝗧𝗵𝗲 𝗥𝗶𝗴𝗵𝘁 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 Choosing the right data store can be confusing with so many options around. This diagram4.3×101k982285871
83Aug 17, '23𝗛𝗼𝘄 𝗗𝗡𝗦 𝗪𝗼𝗿𝗸𝘀? I've just released the new issue of my 𝗻𝗲𝘄𝘀𝗹𝗲𝘁𝘁𝗲𝗿 to more than 13.000 addresses, talking about: 🔹 𝗪𝗵𝗮𝘁 𝗵𝗮𝗽𝗽𝗲𝗻𝘀 𝘄𝗵𝗲𝗻 𝘆𝗼𝘂 𝘁𝘆�4.0×94k1k265522
84Dec 17, '23𝗪𝗵𝗮𝘁 𝗶𝘀 𝘁𝗵𝗲 𝗗𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝗰𝗲 𝗕𝗲𝘁𝘄𝗲𝗲𝗻 𝗜𝗻𝗻𝗲𝗿, 𝗟𝗲𝗳𝘁, 𝗥𝗶𝗴𝗵𝘁, 𝗮𝗻𝗱 𝗙𝘂𝗹𝗹 𝗷𝗼𝗶𝗻? 🔹 (𝗜𝗡𝗡𝗘𝗥) 𝗝𝗢𝗜𝗡: return all rows with matching values 3.9×92k1.2k283885
85Dec 19, '23𝗛𝗼𝘄 𝗱𝗼𝗲𝘀 𝗦𝗶𝗻𝗴𝗹𝗲 𝗦𝗶𝗴𝗻-𝗢𝗻 (𝗦𝗦𝗢) 𝘄𝗼𝗿𝗸? Single sign-on (SSO) is an authentication process that allows a user to access multiple applications with a single log3.7×86k1k224839
86Jun 18, '25𝗪𝗵𝘆 𝗱𝗼𝗲𝘀 𝗚𝗼𝗼𝗴𝗹𝗲 𝗿𝗲𝗰𝗼𝗺𝗺𝗲𝗻𝗱 𝗠𝗼𝗱𝘂𝗹𝗮𝗿 𝗠𝗼𝗻𝗼𝗹𝗶𝘁𝗵𝘀 𝗶𝗻𝘀𝘁𝗲𝗮𝗱 𝗼𝗳 𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀? Over the last decade, we have witnessed a signific3.5×83k1k1661.4k
87Jul 2, '24𝗧𝗼𝗽 𝟮𝟬 𝗦𝗤𝗟 𝗾𝘂𝗲𝗿𝘆 𝗼𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝘁𝗲𝗰𝗵𝗻𝗶𝗾𝘂𝗲𝘀 Here is the list of the top 20 SQL query optimization techniques I found noteworthy: 1. Create an index 3.4×80k9911961.4k
88Feb 20, '25𝗟𝗲𝗮𝗿𝗻 𝗳𝘂𝗻𝗱𝗮𝗺𝗲𝗻𝘁𝗮𝗹𝘀 𝗻𝗼𝘁 𝗳𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀 We developers like to learn new stuff and try it ASAP. That stuff consists mainly of new frameworks and tools (such 3.3×77k1.3k1781.1k
89Feb 16, '24𝗗𝗼 𝗬𝗼𝘂 𝗡𝗲𝗲𝗱 𝗧𝗼 𝗞𝗻𝗼𝘄 𝗔𝗹𝗹 𝗗𝗲𝘀𝗶𝗴𝗻 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀? The answer is no. Even though we have 23 design patterns, around 10 are mostly used in everyday development3.2×76k1.2k2911.6k
90Dec 24, '23𝗧𝗼𝗽 𝟭𝟬 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗮𝗹 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 is the process of designing the structure and behavior of a software system, which3.2×76k1.1k271996
91Sep 6, '25𝗪𝗵𝗮𝘁 𝗶𝘀 𝗔𝗣𝗜 The term "Application Programming Interface" (API) refers to a channel of communication between various software services. Applications that transmit requests 3.2×74k1.3k204974
92Dec 28, '23𝗦𝗤𝗟 𝗤𝘂𝗲𝗿𝗶𝗲𝘀 𝗘𝘅𝗲𝗰𝘂𝘁𝗶𝗼𝗻 𝗢𝗿𝗱𝗲𝗿 We utilize SQL queries to access a collection of records stored in our database tables. Clauses are the building blocks of SQL q3.0×71k1.2k271798
93Apr 1, '24𝗕𝗼𝗼𝗸𝘀 𝗘𝘃𝗲𝗿𝘆 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝗠𝘂𝘀𝘁 𝗥𝗲𝗮𝗱 𝗶𝗻 𝟮𝟬𝟮𝟰. You probably already noticed that I'm a big fan of reading. I usually read 3-4 books per mo3.0×71k1.1k2381.6k
94Oct 13, '25𝗖𝗼𝗻𝗰𝘂𝗿𝗿𝗲𝗻𝘁 𝗶𝘀 𝗻𝗼𝘁 𝘁𝗵𝗲 𝘀𝗮𝗺𝗲 𝗮𝘀 𝗽𝗮𝗿𝗮𝗹𝗹𝗲𝗹 Most developers use these terms interchangeably. That's a mistake. 𝗖𝗼𝗻𝗰𝘂𝗿𝗿𝗲𝗻𝗰𝘆 is about structure.2.9×67k1.1k140951
95Nov 6, '25𝗛𝗼𝘄 𝗱𝗼𝗲𝘀 𝗦𝗶𝗻𝗴𝗹𝗲 𝗦𝗶𝗴𝗻-𝗢𝗻 (𝗦𝗦𝗢) 𝘄𝗼𝗿𝗸? Single sign-on (SSO) is an authentication process that allows a user to access multiple applications with a single log2.8×66k1k166921
96Feb 11, '24𝗔 𝗩𝗶𝘀𝘂𝗮𝗹 𝗚𝘂𝗶𝗱𝗲 𝗢𝗻 𝗛𝗼𝘄 𝗧𝗼 𝗖𝗵𝗼𝗼𝘀𝗲 𝗧𝗵𝗲 𝗥𝗶𝗴𝗵𝘁 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 Choosing the right data store can be confusing with so many options around. This diagram2.7×64k1.1k3041.1k
97Mar 19, '25𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀 Software design defines a system's architecture to meet requirements, creating blueprints for development teams. Over tim2.6×60k1k189932
98Oct 31, '25In software, legacy means it makes money2.1×49k1.6k13975
99Nov 4, '25Backend survival kit. 👇1.9×45k1.1k124718

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