checkpoints Archives

AppWizard

September 8, 2026

Ohio Mobile ID Arrives in Google Wallet, Opening the Program to Android

Ohio residents with Android devices can now integrate their driver's license or state ID into Google Wallet as part of the state's Mobile ID program. This digital credential is a companion to the physical card, and users are encouraged to carry their plastic IDs. To add the credential, users can navigate through the Google Wallet app. The digital ID is accepted for age and identity verification at various businesses, state buildings, TSA checkpoints, and casinos in Ohio. It utilizes specialized readers for presentation and allows users to review shared data. The credentials are encrypted and can be remotely erased if the phone is lost or stolen. Participation in the program is voluntary and free, adhering to privacy and security standards. Governor Mike DeWine highlighted the convenience of this innovation, and vendors are expanding support for mobile driver’s licenses in multiple states.

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 4, 2026

If you hate parrying, projectiles in Beast of Reincarnation are ridiculously overpowered if you focus on leveling them up

The protagonist, Emma, begins her journey in Beast of Reincarnation with a crossbow and later acquires a longbow, which allows for a projectile-focused combat strategy. Upgrading projectiles enables players to significantly reduce enemy health from a distance, minimizing the need for parrying and dodging. Players can replenish arrows and bolts at checkpoints, maintaining a projectile-heavy strategy throughout the game. The skill tree includes options like Tracking Shot, which allows arrows to home in on enemies, and Magic Bullet, which enables tracking shots to hit enemies again. Players can enhance ranged weapons at workbenches and campsites, with upgrades available for reload speed and damage. Investing in projectile upgrades is a viable strategy in the game.

AppWizard

August 4, 2026

Beast of Reincarnation review

"Beast of Reincarnation," developed by Game Freak, is an action RPG set in a desolate 41st-century Japan, featuring a protagonist named Emma who suffers from the Blight, a condition that affects her emotions and memories while granting her unique powers. The gameplay combines open and linear exploration with fast-paced combat reminiscent of titles like Sekiro and Nier, though enemy placement can feel uninspired outside of major encounters. The game has a rugged art style that captures a post-apocalyptic world but may hinder exploration due to dense graphics. Technical performance issues have been noted, particularly on gaming laptops. The narrative is characterized by mature storytelling and nuanced voice acting in Japanese, focusing on silence and introspection rather than typical humor. Despite its flaws, the game aims to offer a unique experience in the action RPG genre.

AppWizard

July 30, 2026

The latest ugly-cool immersive sim is scratching my itch for new Deus Ex

Parkside: Decayed Soul Manipulation, developed by Banana Hardsoft, is set to launch on July 31, with a demo currently available. The game features a raw visual style reminiscent of the PlayStation 1 era and emphasizes gameplay mechanics over graphics. Players assume the role of Alexander, a hacker in a dystopian setting, who becomes entangled with a gang resembling a modern-day Illuminati. The narrative involves eliminating a target as part of a larger scheme, conveyed through symbols and cryptic messages. Players can customize their combat body with various augmentations and earn experience points through exploration and objectives. The game lacks traditional save points, offering Divine Elixirs as one-time-use checkpoints instead. Players can navigate maps with multiple pathways, encouraging exploration. An unexpected encounter with a fallen soldier simplifies a mission, leading to an exhilarating escape in a car.

Tech Optimizer

July 28, 2026

‘PGSimCity’ shows how the PostgreSQL database actually works internally in a SimCity-like 3D environment.

PGSimCity is a web application that provides a 3D visualization of PostgreSQL's architecture, allowing users to explore its internal operations during SQL query execution. The application features an interactive interface that guides users through the connection process to PostgreSQL, illustrating how client connections reach the Postmaster and backend processes. It highlights the significance of connection pooling and the impact of increasing connections on backend processes. In the 'Query Lab' section, SQL statements are transformed into execution plans, showcasing processes like Parser, Rewriter, Planner, and Executor, along with execution paths such as Seq Scan and Index Scan. The shared_buffers area represents PostgreSQL's buffer cache, optimizing performance by reading data in 8KiB pages. Visualizations depict data pages stored on disk, with pathways showing the movement of pages to shared_buffers. The Write-Ahead Log (WAL) mechanism records changes for recovery, and transaction commits wait for WAL records to be flushed. Checkpointing writes dirty pages to storage in batches, which can cause latency spikes. PostgreSQL uses Multi-Version Concurrency Control (MVCC) to manage updated rows and dead tuples, which are cleaned up by autovacuum processes. The application also illustrates replication, where WAL from the primary server is sent to the standby server to maintain data consistency. Overall, PGSimCity provides a comprehensive view of PostgreSQL's components and potential performance issues related to caching, WAL management, checkpointing, vacuuming, and replication.

AppWizard

July 17, 2026

Overwatch’s attempt at bringing back 6v6 feels like a bad compromise—it just doesn’t work

Overwatch introduced a 1-3-2 flex mode, allowing one tank, three DPS, and two support characters, with the option for one DPS to switch to tank. Early experiences indicate that teams with two tanks often dominate those with one, raising concerns about the format's balance. Adjustments to tank health and abilities do not sufficiently address the advantages of having two tanks. The exploration of this hybrid format does not resolve the ongoing debate between the 5v5 and 6v6 setups, as each has distinct characteristics that complicate finding a viable compromise.

Tech Optimizer

July 9, 2026

DBA2: Configuration and Monitoring of PostgreSQL 16 is now available in English

Postgres Professional has translated the DBA2: Configuration and Monitoring of PostgreSQL 16 course into English. This four-day program is designed for PostgreSQL administrators with basic Unix skills and knowledge equivalent to the DBA1 course. The curriculum covers topics such as Multi-Version Concurrency Control (MVCC), isolation levels, vacuuming, buffer cache management, write-ahead logging (WAL), and server upgrades. Participants will learn to configure PostgreSQL parameters, monitor the server, manage localization settings, and handle extensions. The course materials include a student guide for setting up a virtual machine and performing practical tasks. The translation was done by Elena Sharafutdinova, with assistance from Ilya Bashtanov and Alexander Meleshko.

AppWizard

June 26, 2026

Minecraft Adventure Maps — okay so let me just tell you what actually works

Adventure maps in Minecraft allow players to experience curated gameplay without survival mechanics or resource gathering. These maps are designed in Adventure Mode, preventing players from altering the environments. They vary in length and complexity, with some lasting only 20 minutes and others several hours, often featuring custom dialogue and narratives. Quality adventure maps can be found on platforms like Planet Minecraft, MCPEDL, CurseForge, and the Minecraft Marketplace. It's important to check version compatibility to avoid glitches. Recommended adventure maps include Herobrine’s Mansion, Diversity 3, SkyBlock, The Forgotten, Chronos, and Parkour Paradise. Multiplayer maps should be labeled as such to avoid common issues like skipped puzzles and disrupted story pacing. Installing maps differs between Java and Bedrock editions, with Java scanning the saves folder and Bedrock requiring the opening of a .mcworld file. Players may face issues like command blocks failing or visual discrepancies due to missing resource packs or version mismatches. To evaluate a map's quality before downloading, check the download count and read comments for potential bugs. Java and Bedrock maps are not interchangeable, so verifying the edition and compatibility is crucial for a smooth experience.