https://developer20.com/Recent content on Developer 2.0en-usFri, 30 Jan 2026 00:00:00 +0000https://developer20.com/pprof-part2/Fri, 30 Jan 2026 00:00:00 +0000https://developer20.com/pprof-part2/https://developer20.com/pprof-part1-quick-start/Mon, 01 Dec 2025 00:00:00 +0000https://developer20.com/pprof-part1-quick-start/https://developer20.com/go-libs-i-dont-use/Tue, 10 Sep 2024 00:00:00 +0000https://developer20.com/go-libs-i-dont-use/An overview of widely used Go libraries such as sqlmock, GORM, and gorilla/mux, with a discussion of their drawbacks in real-world applications. The post explains when these tools are helpful and when avoiding them leads to cleaner, more maintainable code.https://developer20.com/test-with-random/Mon, 12 Aug 2024 00:00:00 +0000https://developer20.com/test-with-random/https://developer20.com/free-k8s-cluster/Tue, 16 Jan 2024 00:00:00 +0000https://developer20.com/free-k8s-cluster/https://developer20.com/notes/Passwords-in-Go/Sat, 23 Dec 2023 00:00:00 +0000https://developer20.com/notes/Passwords-in-Go/https://developer20.com/notes/GC-in-NodeJS/Fri, 22 Dec 2023 00:00:00 +0000https://developer20.com/notes/GC-in-NodeJS/https://developer20.com/flattening-package-structure/Sun, 16 Jul 2023 00:00:00 +0000https://developer20.com/flattening-package-structure/https://developer20.com/ecommerce/Fri, 07 Jul 2023 00:00:00 +0000https://developer20.com/ecommerce/https://developer20.com/password-policies/Fri, 07 Jul 2023 00:00:00 +0000https://developer20.com/password-policies/https://developer20.com/memory-wall-problem/Thu, 01 Jun 2023 00:00:00 +0000https://developer20.com/memory-wall-problem/https://developer20.com/elseless/Tue, 04 Apr 2023 00:00:00 +0000https://developer20.com/elseless/https://developer20.com/testing-in-go/Wed, 23 Nov 2022 00:00:00 +0000https://developer20.com/testing-in-go/https://developer20.com/smart-home-architecture/Fri, 28 Oct 2022 00:00:00 +0000https://developer20.com/smart-home-architecture/https://developer20.com/json/Mon, 17 Oct 2022 00:00:00 +0000https://developer20.com/json/https://developer20.com/hate-go/Tue, 26 Jul 2022 00:00:00 +0000https://developer20.com/hate-go/https://developer20.com/top-level-logging/Thu, 16 Dec 2021 00:00:00 +0000https://developer20.com/top-level-logging/https://developer20.com/go-mod-replace/Wed, 15 Dec 2021 00:00:00 +0000https://developer20.com/go-mod-replace/https://developer20.com/grpc-ssl/Mon, 29 Nov 2021 00:00:00 +0000https://developer20.com/grpc-ssl/https://developer20.com/how-to-structure-go-code/Wed, 27 Oct 2021 00:00:00 +0000https://developer20.com/how-to-structure-go-code/https://developer20.com/http-connection-livetime/Mon, 09 Aug 2021 00:00:00 +0000https://developer20.com/http-connection-livetime/https://developer20.com/wrapping-commands-with-go/Wed, 14 Jul 2021 00:00:00 +0000https://developer20.com/wrapping-commands-with-go/https://developer20.com/periodically-restarting-apps-on-k8s/Mon, 12 Apr 2021 00:00:00 +0000https://developer20.com/periodically-restarting-apps-on-k8s/https://developer20.com/custom-go-linter/Wed, 31 Mar 2021 00:00:00 +0000https://developer20.com/custom-go-linter/https://developer20.com/reviews/go-programming-language/Tue, 09 Feb 2021 00:00:00 +0000https://developer20.com/reviews/go-programming-language/https://developer20.com/extracting-the-business-logic-project/Tue, 12 Jan 2021 00:00:00 +0000https://developer20.com/extracting-the-business-logic-project/https://developer20.com/refactoring-for-better-testability/Tue, 17 Nov 2020 00:00:00 +0000https://developer20.com/refactoring-for-better-testability/https://developer20.com/is-my-interface-too-big/Wed, 28 Oct 2020 00:00:00 +0000https://developer20.com/is-my-interface-too-big/https://developer20.com/reviews/deep-work/Thu, 15 Oct 2020 00:00:00 +0000https://developer20.com/reviews/deep-work/https://developer20.com/go-context/Thu, 15 Oct 2020 00:00:00 +0000https://developer20.com/go-context/https://developer20.com/reviews/never-split-the-difference/Mon, 05 Oct 2020 00:00:00 +0000https://developer20.com/reviews/never-split-the-difference/https://developer20.com/i-talk-to-scammers/Tue, 25 Aug 2020 00:00:00 +0000https://developer20.com/i-talk-to-scammers/From time to time, I receive an email from a scammer that says he has X million dollars/euro for me. At the very beginning, I removed those emails but at some point, I decided to answer them. Here’s what I found. Every scammer starts very typically. There’s a very reach person who’s dying or very sick. They found my email on the Internet and learned that I’ll be the person who will spend the money wisely.https://developer20.com/go-web-frameworks/Mon, 10 Aug 2020 00:00:00 +0000https://developer20.com/go-web-frameworks/Go has plenty of different web frameworks. When you are faced with choosing a framework for the first time, it may turn out to be quite a challenge to choose the best one. This article is intended to help you choose the best one. It is full of personal judgments that you may disagree with. However, I believe you will find it most helpful.https://developer20.com/add-header-to-every-request-in-go/Tue, 21 Jul 2020 00:00:00 +0000https://developer20.com/add-header-to-every-request-in-go/Making changes to all HTTP requests can be handy. You may want to add an API key or some information about the sender like app version etc. No matter why you want to do that you have a few options to achieve the goal.https://developer20.com/unavailability-is-fine/Thu, 09 Jul 2020 00:00:00 +0000https://developer20.com/unavailability-is-fine/When I started my career as a software developer and published the first production application what I did was staring at logs and look for some fatal errors. It was a monolith application. Every log saying that something's wrong had to be fixed. ASAP. This approach worked for some time. However, when the scale increased, and I started building microservices, I couldn't get rid of all of them. Network issues, database failures, and more - it happens all the time.https://developer20.com/pointer-and-value-semantics-in-go/Mon, 29 Jun 2020 00:00:00 +0000https://developer20.com/pointer-and-value-semantics-in-go/https://developer20.com/what-you-should-know-about-go-slices/Mon, 27 Apr 2020 00:00:00 +0000https://developer20.com/what-you-should-know-about-go-slices/https://developer20.com/using-sync-pool/Tue, 31 Mar 2020 00:00:00 +0000https://developer20.com/using-sync-pool/https://developer20.com/oauth2-and-go/Mon, 09 Mar 2020 00:00:00 +0000https://developer20.com/oauth2-and-go/https://developer20.com/garnish-simple-varnish-in-go/Mon, 03 Feb 2020 00:00:00 +0000https://developer20.com/garnish-simple-varnish-in-go/https://developer20.com/summary-of-2019/Wed, 01 Jan 2020 00:00:00 +0000https://developer20.com/summary-of-2019/https://developer20.com/i-want-to-learn-go/Mon, 09 Dec 2019 00:00:00 +0000https://developer20.com/i-want-to-learn-go/https://developer20.com/writing-proxy-in-go/Mon, 25 Nov 2019 00:00:00 +0000https://developer20.com/writing-proxy-in-go/https://developer20.com/tcp-scanner-in-go/Wed, 23 Oct 2019 00:00:00 +0000https://developer20.com/tcp-scanner-in-go/https://developer20.com/golang-tips-and-trics-vii/Wed, 02 Oct 2019 00:00:00 +0000https://developer20.com/golang-tips-and-trics-vii/https://developer20.com/how-i-organize-packages-in-go/Thu, 22 Aug 2019 00:00:00 +0000https://developer20.com/how-i-organize-packages-in-go/https://developer20.com/golang-tips-and-trics-vi/Wed, 14 Aug 2019 00:00:00 +0000https://developer20.com/golang-tips-and-trics-vi/https://developer20.com/golang-tips-and-trics-v/Mon, 22 Jul 2019 00:00:00 +0000https://developer20.com/golang-tips-and-trics-v/https://developer20.com/gogoconf-2019/Fri, 05 Jul 2019 00:00:00 +0000https://developer20.com/gogoconf-2019/https://developer20.com/software2.0/Fri, 24 May 2019 00:00:00 +0000https://developer20.com/software2.0/https://developer20.com/when-you-can-nose-messages-in-kafka/Tue, 14 May 2019 00:00:00 +0000https://developer20.com/when-you-can-nose-messages-in-kafka/https://developer20.com/golang-tips-and-trics-iv/Mon, 25 Mar 2019 00:00:00 +0000https://developer20.com/golang-tips-and-trics-iv/https://developer20.com/learning-on-mistakes/Mon, 25 Mar 2019 00:00:00 +0000https://developer20.com/learning-on-mistakes/https://developer20.com/golang-tips-and-trics-iii/Mon, 18 Mar 2019 00:00:00 +0000https://developer20.com/golang-tips-and-trics-iii/https://developer20.com/golang-tips-and-trics-ii/Mon, 11 Mar 2019 00:00:00 +0000https://developer20.com/golang-tips-and-trics-ii/https://developer20.com/golang-tips-and-trics-i/Mon, 04 Mar 2019 00:00:00 +0000https://developer20.com/golang-tips-and-trics-i/https://developer20.com/go-deeper-database-connection-pool/Fri, 25 Jan 2019 00:00:00 +0000https://developer20.com/go-deeper-database-connection-pool/https://developer20.com/be-aware-of-coping-in-go/Sat, 19 Jan 2019 00:00:00 +0000https://developer20.com/be-aware-of-coping-in-go/https://developer20.com/books-i-read-in-2018/Mon, 07 Jan 2019 00:00:00 +0000https://developer20.com/books-i-read-in-2018/https://developer20.com/how-to-send-multiple-variables-via-channel-in-golang/Mon, 10 Dec 2018 00:00:00 +0000https://developer20.com/how-to-send-multiple-variables-via-channel-in-golang/https://developer20.com/scientific-method/Mon, 03 Dec 2018 00:00:00 +0000https://developer20.com/scientific-method/https://developer20.com/entity-and-value-object/Sat, 04 Aug 2018 00:00:00 +0000https://developer20.com/entity-and-value-object/https://developer20.com/why-do-many-people-say-that-scrum-is-a-bullshit/Tue, 17 Jul 2018 00:00:00 +0000https://developer20.com/why-do-many-people-say-that-scrum-is-a-bullshit/https://developer20.com/services-in-ddd-finally-explained/Sun, 15 Jul 2018 00:00:00 +0000https://developer20.com/services-in-ddd-finally-explained/https://developer20.com/what-ive-learned-on-a-hackathon/Fri, 29 Jun 2018 00:00:00 +0000https://developer20.com/what-ive-learned-on-a-hackathon/https://developer20.com/indexing-in-mysql/Tue, 29 May 2018 00:00:00 +0000https://developer20.com/indexing-in-mysql/https://developer20.com/history-of-www/Wed, 02 May 2018 00:00:00 +0000https://developer20.com/history-of-www/https://developer20.com/how-to-name-exceptions-its-not-so-obvious/Mon, 02 Apr 2018 00:00:00 +0000https://developer20.com/how-to-name-exceptions-its-not-so-obvious/https://developer20.com/mutational-tests/Sat, 24 Mar 2018 00:00:00 +0000https://developer20.com/mutational-tests/https://developer20.com/an-agony-of-trying-to-do-the-job/Wed, 27 Dec 2017 00:00:00 +0000https://developer20.com/an-agony-of-trying-to-do-the-job/