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Tech Optimizer

September 2, 2026

Connecting My LangGraph AI Agent to Postgres

A stateful LangGraph agent was developed to streamline a 15-minute booking process, mimicking a customer service representative. It features a user-friendly Streamlit UI and a backend powered by a Postgres database. The agent can respond to customer queries, calculate service prices, manage acceptance or rejection of services, propose appointment time slots, and confirm booking details. The agent operates in two persistence modes: in-memory for quick testing and Postgres for durability. Testing can be conducted locally with Streamlit or using Docker to simulate a production environment. Docker allows the application to interact with a PostgreSQL server without local installation, enhancing reproducibility. The project includes a docker-compose.yml file to initiate a PostgreSQL container, and users can also utilize a cloud-based Postgres solution. The application behavior remains consistent regardless of the database setup. The complete source code is available on GitHub for testing and further enhancements.

Tech Optimizer

September 1, 2026

Connecting My LangGraph AI Agent to Postgres

A stateful LangGraph agent was developed to streamline a 15-minute booking process, featuring a user-friendly Streamlit UI and a backend powered by a Postgres database. The agent responds to customer queries, calculates service pricing, manages service acceptance, suggests time slots, and confirms appointment details. It operates in two modes: in-memory for rapid testing and Postgres for persistent storage. Testing can be done locally using Docker, which simulates a Postgres environment, or with a hosted Postgres instance. The project includes a docker-compose.yml file to initiate a PostgreSQL 16 container, allowing the application to connect to the database. Data persistence is ensured through Docker volumes, and the application can be run with specific commands after setting up the environment variables. The system has been tested successfully, demonstrating its ability to manage bookings and maintain data integrity across sessions. Future enhancements are planned to improve the booking workflow and integrate additional communication channels.

AppWizard

August 29, 2026

Minecraft Update 3.47 Released on August 28 for Fixes

Mojang released Minecraft update 3.47 on August 28, consolidating two Bedrock versions into a single update focused on fixes rather than new content. Fixes include: - Removed self-selection expansion for non-operator players using commands (i.e. /tell). - Vibrant Visuals are no longer disabled when loading a world with Education features enabled. - Pressing the Back button on Android now performs the expected in-game back action. - Arrow shot by a slightly charged Bow no longer hits the shooting player. - Fixed an issue that could disconnect players while loading worlds with certain add-on content. - Shift-clicking items in Creative mode while using Pocket UI no longer deletes them. Technical updates include: - Fixed a bug where certain values defined in a dimension JSON file were ignored.

AppWizard

August 29, 2026

Minecraft Bedrock Hotfix Version 26.44/45 Now Out via Update 1.057

Mojang has released the Bedrock hotfix version 26.44/45, known as Minecraft update 1.057, for PS5 users on August 28. This minor update addresses various technical bugs, including: - Removed self-selection expansion for non-operator players using commands like /tell. - Vibrant Visuals are now enabled when loading worlds with Education features. - The Back button on Android now performs the correct in-game action. - Arrows shot by a slightly charged Bow no longer hit the shooting player. - Fixed an issue that could disconnect players while loading worlds with certain add-ons. - Shift-clicking items in Creative mode with Pocket UI now quick-moves them instead of deleting them. - Fixed a bug where certain dimension values in a JSON file were ignored.

AppWizard

August 26, 2026

GBA Emulator Android: My Boy! vs John GBAC vs RetroArch

Game Boy Advance emulation on Android has gained significant traction in 2026, with key applications like My Boy! priced at .99, John GBAC receiving an update on May 19, 2026, and RetroArch enhancing its mGBA core for free use. The search term "gba emulator android" sees around 8,100 monthly searches in the U.S., reflecting a resurgence in interest, particularly among former GBA owners now in their late 20s and 30s who prefer using their smartphones for gaming. All five apps—My Boy!, GBA.emu, John GBAC, RetroArch, and Lemuroid—can run the entire GBA library at full speed on devices from the last six years. The main differences lie in software quality, including save state management, cheat code reliability, controller mapping, and update frequency. My Boy! and GBA.emu utilize cores derived from VisualBoyAdvance (VBA), while John GBAC uses a custom core, and RetroArch and Lemuroid rely on the mGBA core. In terms of features, all apps support save states, but My Boy! offers multiple named slots with thumbnail previews, while RetroArch has a more complex system. Cheat code support is available across the board, with My Boy! and GBA.emu accepting GameShark and CodeBreaker formats, and RetroArch providing a built-in cheat database. My Boy! stands out for its link-cable emulation, allowing local multiplayer connections, whereas RetroArch's netplay is designed for online gaming. All apps support external controllers, but RetroArch excels in visual enhancements with its extensive shader options. The setup process for all five apps is similar and typically takes under ten minutes. GBA ROMs are small, ranging from 4MB to 32MB, making them easy to store on modern devices without significant battery drain. Common issues include save files not loading, audio problems, and cheat codes failing to apply, with solutions often involving file management and settings adjustments. Users can migrate save files between emulators by ensuring the correct file naming and directory structure. Pros and cons of each app include: - My Boy!: Ad-free, strong multiplayer support, but lower rating and closed-source. - GBA.emu: High rating and broad support, but outdated and lacks a free trial. - John GBAC: Free and recently updated, but lower rating and ad-supported. - RetroArch: Free and feature-rich, but complex setup. - Lemuroid: User-friendly and actively maintained, but limited shader options. All five apps are legally available on Google Play, as they do not distribute copyrighted ROM files. Users are advised to source their ROMs legally, ideally by dumping from their own physical cartridges. GBA emulation remains an accessible entry point into retro gaming on Android, especially compared to more demanding systems like the PS2 or GameCube.

AppWizard

August 20, 2026

Everything You Need to Know About Minecraft Dungeons 2

Minecraft Dungeons 2 is scheduled for release on September 29, 2026. It will be available on Xbox Series X|S, PlayStation 5, Nintendo Switch, Nintendo Switch 2, and PC. The base version will cost .99, while the Deluxe Edition will retail at .99. The game will be included in Xbox Game Pass from day one. The Deluxe Edition includes the base game, two DLCs, a Soul Cape, four Hero Skins, a Blub Pet, two additional Hero Skins, a Twisted Cape, and a Twisted Chicken Pet. No prior experience with the first game is necessary, as Minecraft Dungeons 2 is a standalone adventure. Players can engage in solo play or team up with up to three friends in both online and local co-op modes, and the game supports crossplay. The minimum system requirements include Windows 10 64-bit, Intel Core i3‑8100 or AMD Ryzen 3 2200G, NVIDIA GeForce GTX 1050 or AMD Radeon RX 560, and 8 GB RAM. Recommended requirements include Intel Core i5‑8400 or AMD Ryzen 5 2600, NVIDIA GeForce GTX 1060 or AMD Radeon RX 580, and 16 GB RAM. New features include two interconnected worlds, categorized armor slots, streamlined inventory management, a new jumping mechanic, and the introduction of Talismans for unique passive abilities.

AppWizard

August 19, 2026

Is a $1,200 gaming PC build in 2026 still possible?

The prices for essential PC gaming components have increased significantly, making it difficult to assemble a gaming rig within the ,000 to ,500 range. It is still possible to build a system capable of running popular games like Counter Strike 2 and Valorant, as well as more demanding titles like Cyberpunk 2077 and Resident Evil Requiem, while also preparing for future releases such as GTA 6. A curated selection of components for a gaming PC totals approximately ,294, which includes: - Case: Gamemax M60 Micro ATX - CPU: AMD Ryzen 5 9600X (9) - CPU cooler: MSI MAG COREFROZR AA13 - Motherboard: ASRock B650M Pro RS WiFi (9) - RAM: Corsair Vengeance 2x8GB DDR5 6000 () - GPU: Gigabyte GeForce RTX 5060 Gaming OC V2 8GB (9) - SSD: Kingston NV3 PCIe 4.0 NVMe SSD, 1TB () - PSU: ASRock PRO-650G 650W The AMD Ryzen 5 9600X is a six-core processor operating at 3.9 GHz, priced at 9. The MSI MAG COREFROZR AA13 CPU cooler has a maximum thermal design power (TDP) of 240W. The ASRock B650M Pro RS WiFi motherboard includes integrated WiFi. The RAM configuration consists of two 8GB sticks of Corsair's DDR5 6000 RAM, priced at . The RTX 5060 8GB graphics card is noted as a solid entry-level gaming GPU. The selected 1TB M.2 SSD costs , and the ASRock PRO-650G 650W power supply unit ensures stability for the system.

Tech Optimizer

August 18, 2026

Migrate Amazon Aurora PostgreSQL across major versions with active Debezium CDC connectors using native logical replication

Organizations using Debezium Change Data Capture (CDC) connectors on Amazon Aurora PostgreSQL-Compatible Edition face challenges during major database version upgrades. In-place upgrades require downtime, while blue/green deployments disrupt CDC event pipelines. A method using PostgreSQL's native logical replication allows migration between a source cluster (current version) and a target cluster (new major version) without a full connector re-snapshot. This approach minimizes risks of data loss and allows existing Debezium connectors to operate on the source during synchronization. The cutover process involves disabling the replication subscription, synchronizing sequences, creating a new Debezium replication slot on the target, and redirecting the connector, resulting in a brief pause for Kafka consumers. Prerequisites for this method include enabling logical replication on the source cluster, ensuring the target cluster is provisioned in the same VPC, and confirming that tables participating in CDC have primary keys. The process involves configuring parameter groups, creating publications, and establishing subscriptions for logical replication. During cutover, application writes are halted, and replication lag must be monitored to ensure it reaches zero before proceeding. After the cutover, ongoing monitoring of replication health and Kafka consumer offsets is necessary. Common failure scenarios include Aurora writer failover, Debezium connector stalls, large messages exceeding Kafka limits, DDL changes during synchronization, and long-running transactions blocking lag drain. Each scenario has specific symptoms, detection methods, and resolutions. Post-migration, organizations should establish monitoring for replication lag growth and Kafka consumer offset divergence. Automation can streamline the migration process for organizations managing multiple clusters, utilizing AWS Cloud Development Kit (CDK) constructs for cluster provisioning, schema replication, and cutover orchestration. After verifying stable operation on the target cluster, the old Debezium connector and source cluster can be decommissioned. Limitations include the absence of failover slots on Aurora PostgreSQL 17 and the need to handle TOAST columns appropriately.

AppWizard

August 17, 2026

Minecraft 26.3 Snapshot 9

The latest Snapshot introduces new customization options for Realms, allowing owners to adjust render distance up to 25 chunks and fine-tune render and simulation distances. It includes technical improvements and bug fixes for overall performance. New features for Realms include render distance and simulation distance sliders. Minor tweaks include Endermen taking damage from projectiles while riding entities and restrictions on their teleportation abilities. A "Right Click Emulation" option has been added for macOS users. The Data Pack version has been updated to 117.0, with changes to advancements, slot sources, loot functions, and number providers. New tags for blocks, items, and potions have been introduced. Bugs related to block breaking on macOS, teleportation glitches, rendering issues, and crashes have been fixed. Snapshots are available for Minecraft: Java Edition, and users are advised to back up their data before testing.

AppWizard

August 15, 2026

EverQuest Legends is the only MMO that could hook me in 2026

PC Gamer's column "Terminally Online" explores the world of MMOs, featuring insights and guest writers discussing their favorite games. The author reflects on their experience with EverQuest, recalling their first adventures in 1999 at the age of six, influenced by their father's choice of a gnome magician. They describe the game's vastness and their initial fear of exploring beyond West Freeport, where they spent time battling rats and orc centurions. The recent release of EverQuest Legends aims to evoke nostalgia by reconstructing the original game with its graphics and mechanics while introducing modern conveniences such as in-game maps and a more forgiving gameplay experience. Project 1999 offers a free-to-play version of classic EverQuest, but many find it a fleeting experience. EverQuest Legends, developed by Game Jawn, has made the game more accessible with frequent level-ups and a gentler learning curve, inviting players to explore at their own pace. The game retains the essence of the original while appealing to those who enjoy mastering its systems, blending nostalgia with modernity.