Engineering notes and cheat sheets from ARI Systems.https://aripd.com/https://aripd.com/blog/gnome/https://aripd.com/blog/gnome/Making the GNOME login screen ask for a username instead of showing the user list.Tue, 07 Apr 2026 00:00:00 GMTLinux & Systemshttps://aripd.com/blog/frontend/https://aripd.com/blog/frontend/A front-end checklist covering meta tags, HTML, CSS, JavaScript, performance, SEO, accessibility and security.Sun, 15 Mar 2026 00:00:00 GMTWeb & Frontendhttps://aripd.com/blog/ollama/https://aripd.com/blog/ollama/CPU'lu makinelerde Ollama ile yerel LLM çalıştırma ve performansı artıran kritik ayarlar.Sat, 07 Mar 2026 00:00:00 GMTAI & DataDevOps & Containershttps://aripd.com/blog/jitsi/https://aripd.com/blog/jitsi/Self-hosting Jitsi Meet: installation, Let's Encrypt, firewall rules, secure meetings and monitoring.Sun, 25 Jan 2026 13:03:00 GMTLinux & Systemshttps://aripd.com/blog/steam/https://aripd.com/blog/steam/Linux'ta Steam ve Counter-Strike 2: GPU ayarları ve başlatma 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Integrationhttps://aripd.com/blog/swift-core-location/https://aripd.com/blog/swift-core-location/Background location tracking in SwiftUI with Core Location and storing points with Core Data.Mon, 08 May 2023 00:00:00 GMTApple & Mobilehttps://aripd.com/blog/sql/https://aripd.com/blog/sql/SQL joins explained — inner, left, right and full outer — with examples.Sat, 14 Jan 2023 00:00:00 GMTDatabaseshttps://aripd.com/blog/database-migration/https://aripd.com/blog/database-migration/Migrating a MySQL database to PostgreSQL with pgloader, step by step.Wed, 02 Nov 2022 00:00:00 GMTDatabaseshttps://aripd.com/blog/google-sheets-json-access/https://aripd.com/blog/google-sheets-json-access/Reading a public Google Sheet as JSON over HTTP, without an API key.Sun, 09 Oct 2022 00:11:00 GMTAPIs & Integrationhttps://aripd.com/blog/kubernetes/https://aripd.com/blog/kubernetes/Running Kubernetes workloads locally with Podman, Podman Desktop, kubectl and minikube.Sun, 09 Oct 2022 00:11:00 GMTDevOps & Containershttps://aripd.com/blog/trivy/https://aripd.com/blog/trivy/Installing Trivy and scanning repositories, images and Kubernetes clusters for vulnerabilities.Sun, 09 Oct 2022 00:11:00 GMTSecurityDevOps & Containershttps://aripd.com/blog/gpg/https://aripd.com/blog/gpg/Creating GPG keys, setting a default key and signing Git commits and Maven artifacts.Sat, 08 Oct 2022 00:00:00 GMTSecurityhttps://aripd.com/blog/netbeans/https://aripd.com/blog/netbeans/Building NetBeans from source, cleaning the Recent Projects list and choosing the JDK it runs on.Fri, 09 Sep 2022 00:00:00 GMTDeveloper Toolshttps://aripd.com/blog/jakarta/https://aripd.com/blog/jakarta/Jakarta EE namespaces, project settings and what changed in Jakarta EE 10 and 11.Sun, 26 Jun 2022 00:00:00 GMTJava & Jakarta EEhttps://aripd.com/blog/vim/https://aripd.com/blog/vim/Vim and Neovim setup: vimtex with Zathura, Neo-tree, packer.nvim and vim-plug.Sun, 12 Jun 2022 12:44:00 GMTDeveloper Toolshttps://aripd.com/blog/jsf/https://aripd.com/blog/jsf/Jakarta Faces (JSF) notes: WebSocket push, scopes, events, Ajax, security and cross-field validation.Sun, 24 Apr 2022 10:06:00 GMTJava & Jakarta EEWeb & Frontendhttps://aripd.com/blog/swift/https://aripd.com/blog/swift/Swift language notes: collection types, conditions and loops, functions and closures.Fri, 25 Mar 2022 00:00:00 GMTApple & Mobilehttps://aripd.com/blog/solidity/https://aripd.com/blog/solidity/Solidity ve Ethereum akıllı sözleşmeleri: değişken türleri, fonksiyonlar ve temel kavramlar.Fri, 25 Feb 2022 00:00:00 GMTMiscellaneoushttps://aripd.com/blog/web-components/https://aripd.com/blog/web-components/The Web Components lifecycle: constructor, connected, attributeChanged, adopted and disconnected callbacks.Wed, 12 Jan 2022 00:00:00 GMTWeb & Frontendhttps://aripd.com/blog/caching/https://aripd.com/blog/caching/The top caching strategies — cache-aside, read-through, write-through, write-back — compared.Fri, 12 Feb 2021 00:00:00 GMTArchitecture & Processhttps://aripd.com/blog/jasperreports/https://aripd.com/blog/jasperreports/JasperReports tips: internationalization, pagination, split types and floating elements.Fri, 29 Jan 2021 00:00:00 GMTJava & Jakarta EEhttps://aripd.com/blog/jdbc/https://aripd.com/blog/jdbc/JDBC connection pools, driver and DataSource classes per database, and local versus XA transactions.Sat, 12 Dec 2020 00:00:00 GMTJava & Jakarta EEDatabaseshttps://aripd.com/blog/jwt/https://aripd.com/blog/jwt/How JSON Web Token authentication works, step by step.Thu, 26 Nov 2020 00:00:00 GMTSecurityAPIs & Integrationhttps://aripd.com/blog/sonar/https://aripd.com/blog/sonar/Static code analysis with SonarQube and SonarCloud from Maven builds.Sat, 10 Oct 2020 00:00:00 GMTObservability & TestingDeveloper Toolshttps://aripd.com/blog/ci-cd/https://aripd.com/blog/ci-cd/Continuous integration, delivery and deployment explained, with the pipeline stages that make them work.Tue, 28 Jul 2020 00:00:00 GMTDevOps & Containershttps://aripd.com/blog/apm/https://aripd.com/blog/apm/Application performance monitoring for Java servers, including setting up the Glowroot agent on GlassFish.Mon, 15 Jun 2020 00:00:00 GMTObservability & Testinghttps://aripd.com/blog/ascii-table/https://aripd.com/blog/ascii-table/ASCII reference table: control characters, printable characters and extended codes 0–255.Wed, 12 Feb 2020 00:00:00 GMTMiscellaneoushttps://aripd.com/blog/algorithms/https://aripd.com/blog/algorithms/Distance measures for data science: Manhattan, Euclidean and Minkowski.Wed, 15 Jan 2020 00:00:00 GMTAI & Datahttps://aripd.com/blog/activemq/https://aripd.com/blog/activemq/JMS and Apache ActiveMQ: topics versus queues, installation and connecting it to GlassFish.Wed, 11 Sep 2019 00:00:00 GMTJava & Jakarta EEAPIs & Integrationhttps://aripd.com/blog/nginx/https://aripd.com/blog/nginx/NGINX as a reverse proxy with multiple server blocks and auto-renewing TLS certificates.Sat, 17 Aug 2019 00:00:00 GMTDevOps & Containershttps://aripd.com/blog/sass/https://aripd.com/blog/sass/Common CSS and Sass terminology explained.Fri, 22 Feb 2019 00:00:00 GMTWeb & Frontendhttps://aripd.com/blog/cdi/https://aripd.com/blog/cdi/CDI predefined beans, resource injection and JNDI lookups in Jakarta EE.Sat, 12 Jan 2019 00:00:00 GMTJava & Jakarta EEhttps://aripd.com/blog/messageformat/https://aripd.com/blog/messageformat/Pluralizing messages with Java MessageFormat and ChoiceFormat, with example outputs.Wed, 26 Dec 2018 00:00:00 GMTJava & Jakarta EEhttps://aripd.com/blog/restful/https://aripd.com/blog/restful/JAX-RS exception handling and testing REST endpoints with curl: JSON, form data and file uploads.Sat, 15 Dec 2018 00:00:00 GMTAPIs & IntegrationJava & Jakarta EEhttps://aripd.com/blog/ssl/https://aripd.com/blog/ssl/SSL certificate files explained, converting CRT to PEM and issuing free certificates with Let's Encrypt.Sun, 02 Sep 2018 00:00:00 GMTSecurityhttps://aripd.com/blog/elk/https://aripd.com/blog/elk/Running the ELK stack in Docker, creating the default Kibana index pattern and shipping Java logs with Logback.Thu, 19 Apr 2018 21:52:00 GMTObservability & Testinghttps://aripd.com/blog/email-address-verification/https://aripd.com/blog/email-address-verification/Ways to verify email addresses: catch-all domains, double opt-in and re-type checks.Tue, 10 Apr 2018 00:00:00 GMTBusinesshttps://aripd.com/blog/jetty/https://aripd.com/blog/jetty/Running web applications with the Maven Jetty plugin, including TLS/SSL support.Tue, 03 Apr 2018 22:33:00 GMTJava & Jakarta EEhttps://aripd.com/blog/wildfly/https://aripd.com/blog/wildfly/Connecting WildFly to PostgreSQL and MySQL: driver modules, datasources and common errors.Mon, 02 Apr 2018 22:33:00 GMTJava & Jakarta EEhttps://aripd.com/blog/glassfish/https://aripd.com/blog/glassfish/GlassFish installation, clustering, default ports and paths, fine-tuning, certificates and asadmin commands.Sun, 01 Apr 2018 22:33:00 GMTJava & Jakarta EEhttps://aripd.com/blog/macosx/https://aripd.com/blog/macosx/macOS tips: Preview settings, hidden utilities and handy command-line tools for audio, video and downloads.Thu, 15 Mar 2018 12:56:00 GMTApple & Mobilehttps://aripd.com/blog/logback/https://aripd.com/blog/logback/Logback appenders: rolling file logs and writing logs to a database over JNDI.Mon, 05 Mar 2018 18:06:00 GMTJava & Jakarta EEObservability & Testinghttps://aripd.com/blog/persistence/https://aripd.com/blog/persistence/JPA recipes: type mappings, sequence generators, dynamic persistence units, bulk updates and many-to-many with extra columns.Sun, 04 Feb 2018 14:27:00 GMTJava & Jakarta EEDatabaseshttps://aripd.com/blog/derby/https://aripd.com/blog/derby/Apache Derby, the embedded Java database: the ij tool, connection URLs and common SQL tasks.Thu, 25 Jan 2018 11:13:00 GMTDatabasesJava & Jakarta EEhttps://aripd.com/blog/swing/https://aripd.com/blog/swing/Java Swing on macOS: screen menu bar, app name and dock icon, splash screens and executables.Mon, 15 Jan 2018 10:45:00 GMTJava & Jakarta EEhttps://aripd.com/blog/javafx/https://aripd.com/blog/javafx/JavaFX notes: FXML controllers, user-agent stylesheets, high-contrast themes, virtual keyboard and charts.Fri, 12 Jan 2018 10:45:00 GMTJava & Jakarta EEhttps://aripd.com/blog/gis/https://aripd.com/blog/gis/GIS math: degrees-minutes-seconds, point-in-circle tests, distances and geographic midpoints in Java.Thu, 28 Dec 2017 15:22:00 GMTMiscellaneoushttps://aripd.com/blog/ecommerce/https://aripd.com/blog/ecommerce/The e-commerce KPIs worth tracking, from conversion rate to customer lifetime value.Sat, 16 Dec 2017 00:00:00 GMTBusinesshttps://aripd.com/blog/tex/https://aripd.com/blog/tex/Writing math with LaTeX and KaTeX, plus live recompilation while you edit.Fri, 01 Sep 2017 20:15:00 GMTMiscellaneoushttps://aripd.com/blog/mssql/https://aripd.com/blog/mssql/Running SQL Server in Docker and connecting to it with jTDS and a JDBC connection pool.Thu, 10 Aug 2017 20:15:00 GMTDatabaseshttps://aripd.com/blog/ssh/https://aripd.com/blog/ssh/SSH keys: generating key pairs, passphrases, copying keys, known hosts and testing connections.Wed, 09 Aug 2017 23:05:00 GMTSecurityLinux & Systemshttps://aripd.com/blog/maven/https://aripd.com/blog/maven/Maven tips: the build lifecycle, overriding parameters, skipping tests, dependency graphs and archetypes.Tue, 01 Aug 2017 20:23:00 GMTJava & Jakarta EEDeveloper Toolshttps://aripd.com/blog/testing/https://aripd.com/blog/testing/Testing notes: load and stress tests, the C10K problem and code coverage.Mon, 31 Jul 2017 11:23:00 GMTObservability & Testinghttps://aripd.com/blog/microsoft/https://aripd.com/blog/microsoft/Finding a Windows OEM license key, generic keys and changing the product key on Windows 11.Wed, 12 Jul 2017 10:25:00 GMTMiscellaneoushttps://aripd.com/blog/hadoop/https://aripd.com/blog/hadoop/Installing and configuring Hadoop on a single machine: core-site, hdfs-site, mapred-site and SSH setup.Wed, 10 May 2017 09:58:00 GMTAI & Datahttps://aripd.com/blog/algorithms-for-machine-learning/https://aripd.com/blog/algorithms-for-machine-learning/An overview of supervised learning algorithms — regression, classification and the math behind how models learn.Fri, 21 Apr 2017 23:52:00 GMTAI & Datahttps://aripd.com/blog/artificial-intelligence/https://aripd.com/blog/artificial-intelligence/AI project basics: the steps, model, library and feature selection, and RAG architecture.Thu, 20 Apr 2017 23:52:00 GMTAI & Datahttps://aripd.com/blog/debian/https://aripd.com/blog/debian/Debian administration notes: versions, updates, locale and time zone, package cleanup and text-mode boot.Sat, 01 Apr 2017 22:13:00 GMTLinux & Systemshttps://aripd.com/blog/epub/https://aripd.com/blog/epub/Converting EPUB to Kindle formats with KindleGen and Calibre on Linux and macOS.Sat, 14 Jan 2017 09:30:00 GMTMiscellaneoushttps://aripd.com/blog/docker/https://aripd.com/blog/docker/Docker cheat sheet: containers, logs, networks, Docker Compose startup order and Swarm mode.Sun, 23 Oct 2016 13:13:00 GMTDevOps & Containershttps://aripd.com/blog/git/https://aripd.com/blog/git/Git cheat sheet: configuration, aliases, tokens, signed-off commits, cloning and branches.Mon, 14 Dec 2015 14:34:00 GMTDeveloper Toolshttps://aripd.com/blog/gcc/https://aripd.com/blog/gcc/How GCC compiles C: the preprocessor, compiler, assembler and linker stages.Sun, 13 Dec 2015 14:34:00 GMTDeveloper Toolshttps://aripd.com/blog/web-service/https://aripd.com/blog/web-service/SOAP web services with JAX-WS: publishing endpoints, WSDL and generating clients with wsimport.Thu, 30 Apr 2015 13:11:00 GMTAPIs & IntegrationJava & Jakarta EEhttps://aripd.com/blog/postgres/https://aripd.com/blog/postgres/PostgreSQL cheat sheet: installation, import and export, useful psql queries and migrating from MySQL.Wed, 29 Apr 2015 23:01:00 GMTDatabaseshttps://aripd.com/blog/mysql/https://aripd.com/blog/mysql/MySQL cheat sheet: upgrading to 8.x, users and privileges, password resets and data migration.Tue, 28 Apr 2015 23:01:00 GMTDatabaseshttps://aripd.com/blog/process-models-in-software-engineering/https://aripd.com/blog/process-models-in-software-engineering/Software process models compared: waterfall, iterative, spiral, V-model and big bang.Thu, 26 Feb 2015 00:15:00 GMTArchitecture & Processhttps://aripd.com/blog/socat/https://aripd.com/blog/socat/Creating virtual serial port pairs with socat on macOS.Thu, 07 Aug 2014 01:49:00 GMTLinux & Systemshttps://aripd.com/blog/java/https://aripd.com/blog/java/Core Java reference: modifiers, primitives, collections, the Stream API and OOP concepts.Tue, 09 Oct 2012 00:11:00 GMTJava & Jakarta EEhttps://aripd.com/blog/linux/https://aripd.com/blog/linux/Linux komut satırı notları: dosya sistemi, kullanıcılar, servisler, ağ ve günlük yönetim komutları.Tue, 09 Oct 2012 00:11:00 GMTLinux & Systems