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Paweł Lachowski

Paweł Lachowski

Technical Writer

Paweł Lachowski is a technical writer at RavenDB, focused on writing articles and GitHub announcements.

Related articles

Using RavenDB Queue ETL as Event Outbox

Using RavenDB Queue ETL as Event Outbox

24 February 2026

Highlights Use RavenDB Queue ETL to implement the transactional outbox pattern without complex application code. Ensure invoice data and events stay consistent across databases and message queues. Publish events automatically to Kafka or RabbitMQ using RavenDB’s durable ETL pipelines. Distributed systems and their quirks Sometimes, database-level transactions' atomicity isn’t enough to prevent inconsistencies. Consider a...

Begin analysis with OLAP ETL

Begin analysis with OLAP ETL

23 December 2025

Highlights Use RavenDB OLAP ETL to move operational data into analytics systems automatically. Transform transactional data into Parquet format optimized for OLAP workloads. Send scheduled data batches directly to destinations like Amazon S3 without building a separate pipeline. Operational Data to Insight There comes a moment in projects when operational data is not enough, and...

RavenDB Ansible Collection: New Features (12/25)

RavenDB Ansible Collection: New Features (12/25)

16 December 2025

Highlights The RavenDB Ansible Collection adds new automation capabilities for database operations and cluster management. New modules support health checks, encrypted database creation, and connection string automation. DevOps teams can now automate index configuration, rolling index deployment, and node joins in secured clusters. What’s new? Production-Ready Improvements to the RavenDB Ansible Collection Some time ago,...

Feed Elasticsearch from your RavenDB

Feed Elasticsearch from your RavenDB

8 December 2025

Highlights Use RavenDB’s built-in Elasticsearch ETL to sync data without custom integration code. Transform and send documents directly to Elasticsearch indexes in a controlled, incremental pipeline. Maintain existing ELK or search workflows while reducing integration complexity and operational overhead. Seamlessly Integrate RavenDB with Elasticsearch Using Built-in ETL Support If you care about your craft, you...

Master RavenDB: Indexing Staleness

Master RavenDB: Indexing Staleness

24 November 2025

Highlights RavenDB indexes update asynchronously to maintain high write performance and availability. Query results may be temporarily stale while indexes process new data in the background. Developers can control query freshness using WaitForNonStaleResults or session-level settings. To Wait or Not to Wait: Practical Examples of Staleness Imagine inserting thousands or millions of documents into your...

Set up RavenDB Server using AWS Marketplace

Set up RavenDB Server using AWS Marketplace

11 November 2025

Highlights Launch RavenDB fast using AWS Marketplace with full control over your environment Secure your instance by limiting inbound rules to your IP during setup Use SSH port forwarding to connect locally to your RavenDB server There are many ways to run and manage RavenDB. Every one of them has different characteristics and might be...

On CVE-2025-55315: Security Assessment

On CVE-2025-55315: Security Assessment

6 November 2025

Highlights CVE-2025-55315 enables request smuggling to bypass authorization in .NET apps RavenDB blocks the exploit using mutual TLS and strict certificate validation Unauthorized requests fail early with 403, before reaching any database endpoint Automatic Pre-Emption: Why the Malicious Request Failed (Details the result of the attempted exploit) A few weeks ago, a new vulnerability tracked...

Set up Zabbix Monitoring for RavenDB Cloud

Set up Zabbix Monitoring for RavenDB Cloud

3 November 2025

Prerequisites: What You Need Before You Start After setting up RavenDB and watching data flow smoothly between your app and a database, you realize that storing information is only half the story. The other half is keeping it nice and safe. That curiosity leads to monitoring. Tools designed to keep an eye on systems, servers,...

Employing Data Archival

Employing Data Archival

23 October 2025

Highlights Use RavenDB Data Archival to keep historical data without slowing down queries. Archived documents are excluded from indexes, reducing query load and improving performance. Maintain compliance while optimizing your system by separating active and historical data efficiently. Achieve Database Performance and Compliance: Archiving Historical Documents in RavenDB Let’s say you’re building an invoice processing...

Unlock RavenDB GenAI potential with attachments

Unlock RavenDB GenAI potential with attachments

3 October 2025

Highlights RavenDB GenAI now works with attachments like PDFs, images, and logs for richer AI context. Build AI-powered workflows like image search, support triage, and resume screening directly in your database. Eliminate external pipelines by bringing AI processing closer to your data inside RavenDB. RavenDB 7.1 introduced a major feature: GenAI. It is a highly...

How to query using RavenDB and ASP.NET Core 9

How to query using RavenDB and ASP.NET Core 9

22 September 2025

Querying in RavenDB is straightforward, regardless of whether you are using automatic indexes or static ones. It enables you to search for specific documents in your collections. Let’s see how to query with ASP.NET and RavenDB, step by step. Highlights Set up a RavenDB connection in ASP.NET Core using IDocumentStore. Create a simple /Employees endpoint...

Master RavenDB: Spotting red flags in index definitions

Master RavenDB: Spotting red flags in index definitions

17 September 2025

Every database has a way of making data easier & faster to find. This role is often fulfilled by indexes. Without them, every request would be like searching through a stack of papers one by one, hoping to stumble on the right page. With them, your queries can quickly jump over to the relevant results,...

AI Image Search with RavenDB

AI Image Search with RavenDB

4 September 2025

A few months ago, we introduced native vector search in RavenDB. Up to this point, we’ve mainly focused on text embeddings, showing how well vector search can work with language-based data. But let’s not stop there: vector search isn’t limited to text, and we can go beyond words. Highlights Use RavenDB vector search to find...

Master RavenDB: Projections & Performance

Master RavenDB: Projections & Performance

30 July 2025

When working with larger data models, you might not be interested in the whole document. If you want to select a few specific fields, you can use projections. Projections are a flexible and high-performance tool that allows you to choose a few fields without fetching the full document. Let’s take a look at projections and...

Semantic Search with RavenDB, Python, and FastAPI

Semantic Search with RavenDB, Python, and FastAPI

23 July 2025

Semantic search is a more intuitive way for your users to find the content they need. They do not need to look for specific keywords but search by meaning. If you want to enhance your users' experience, it will simplify finding the content your users are looking for. To achieve this, your data needs to...

What requests hit my cloud cluster?

What requests hit my cloud cluster?

2 July 2025

Have you ever tried to make a query to your database while creating an app, but it didn’t respond? Or maybe you noticed high activity on your database, but nothing happens within the data? If those problems sound familiar or you just want to know how to check how your database is doing, then you...

Survive the AI tidal wave with RavenDB & GenAI

Survive the AI tidal wave with RavenDB & GenAI

25 June 2025

Highlights Use RavenDB GenAI to process, summarize, and update documents directly inside the database. Add AI-powered support workflows without building custom AI pipelines. Combine GenAI with automatic embeddings to make app data searchable by meaning. The Surge Over the last few years, we have seen a shift in our software landscape. Architecture patterns are dynamically...

Leverage RavenDB observability with Datadog

Leverage RavenDB observability with Datadog

10 June 2025

Highlights Connect RavenDB to Datadog using OpenTelemetry and the Datadog Agent. Build dashboards to monitor RavenDB metrics such as CPU usage. Create Datadog alerts to catch database health issues before they become bigger problems. Observability, Monitoring, and RavenDB Continuous monitoring is essential to determine when your application's health is in danger. Usually, you need to...

GenAI & how we make you work less

GenAI & how we make you work less

4 June 2025

Highlights Use RavenDB GenAI to automate reasoning-based tasks directly inside the database. Control exactly what document data is sent to the AI model with ai.genContext. Prevent repeated AI processing with built-in GenAI hashes that track already processed content. RavenDB's mission has been clear since the very beginning: to take the hard work off your shoulders...

Migrate your databases in RavenDB

Migrate your databases in RavenDB

30 April 2025

Introduction Most probably, you're here because you need to migrate your data from one database to another. You are in luck because RavenDB makes it easy. There are a couple of ways to achieve it that fit different scenarios. You can either: Export & Import Import using URL Use external replication - No downtime You...

Enable AI Search in your web app in 5 minutes

Enable AI Search in your web app in 5 minutes

29 April 2025

Introduction As AI becomes increasingly intelligent, why not use it to enhance your apps? One of the use cases is improving your app’s search functionality with AI-driven search. This nifty feature utilizes AI-generated embeddings to find the items that are most similar to your input. You might be encouraged to implement an AI search for...

Master RavenDB: Troubleshoot & Fix High Memory Usage

Master RavenDB: Troubleshoot & Fix High Memory Usage

8 April 2025

What you will learn What can affect your memory and how RavenDB manages it How to check if your memory usage is high & identify the cause of it Good practices to avoid future problems Introduction Memory is a limited resource, so at RavenDB, we do our best to optimize its use, but it might...

Simple CRUD operations with RavenDB and ASP.NET Core 8 application

Simple CRUD operations with RavenDB and ASP.NET Core 8 application

31 March 2025

What you will learn How to create RavenDB ASP.NET CRUD app fast using a generator Introduction Preparing basic CRUD operations can be a helpful base for your next steps when building an ASP.NET app that uses RavenDB as storage. This article will create a simple app connected to a database. It will be an app...

Generate Embeddings for AI Search with RavenDB and External Models

Generate Embeddings for AI Search with RavenDB and External Models

27 March 2025

Introduction As AI models improve, ignoring their potential would be a mistake. Following this market trend, we engineered and released AI Integration. We’ve put effort into not giving you an AI filler but a well-optimized, convenient, and seamlessly fitting RavenDB ecosystem solution with the best DX possible. With AI Integration you can quickly generate embeddings...

RavenDB data visualization with Power BI

RavenDB data visualization with Power BI

17 March 2025

What you will learn How to load your RavenDB documents into Power BI How to create basic visualization with Power BI How to query during Power BI import Introduction Sometimes, data is easier to present in bars, columns, or other graphs. For those situations, Microsoft's Power BI data visualization software is perfect. This article will...

Increase your RavenDB observability with Grafana Cloud and OpenTelemetry

Increase your RavenDB observability with Grafana Cloud and OpenTelemetry

3 March 2025

What you will learn How to enable OpenTelemetry in RavenDB How to connect your RavenDB to Grafana Cloud How to create basic visualization in Grafana Cloud Introduction Increasing your system's observability is often much appreciated, but setting up database monitoring can become complex. That’s why, in this article, we’ll precisely guide you through setting up...

How to troubleshoot RavenDB’s high CPU usage

How to troubleshoot RavenDB’s high CPU usage

25 February 2025

What you will learn Common high CPU usage problem causes Difference between Current CPU Usage and Total CPU Usage Time How to use tools to investigate your problem of high CPU usage Introduction High CPU usage can be a challenging issue for anyone. Whether you noticed it on the RavenDB dashboard or started investigating why...

New in 7.0: NLog Logging System

New in 7.0: NLog Logging System

4 February 2025

Introduction With the release of 7.0, we revamped our logging system. It uses the NLog logging platform, making it easier to analyze your logs thanks to the standardized system. NLog also allows you to connect your logs to any other tool that has integration available — it is a great opportunity to integrate RavenDB logs...

Sending your RavenDB 7.0 logs to Grafana Cloud

Sending your RavenDB 7.0 logs to Grafana Cloud

What you will learn How to change the configuration of NLog.config How to connect your logs to Grafana Cloud Introduction With RavenDB 7.0, we've introduced the NLog system, bringing log management and monitoring to a whole new level. This upgrade unlocks new and useful NLog integrations, now compatible with RavenDB. In this guide, we will...

New in 7.0: RavenDB and Amazon SQS ETL

New in 7.0: RavenDB and Amazon SQS ETL

Introduction In version 7.0, we introduced a new ongoing task: Amazon SQS ETL. Amazon SQS, short for Simple Queue Services, is a fully managed queuing service that is part of AWS. This ETL will allow you to integrate your RavenDB database into the AWS ecosystem, with an AWS SQS queue as an entry point. We...

New in 7.0: RavenDB to Snowflake

New in 7.0: RavenDB to Snowflake

Introduction Just as snowflakes are unique, so are databases. In RavenDB 7.0, we introduce a plethora of new features – one of which is the ongoing Snowflake ETL task. With this feature, you can effortlessly set up a task to connect to your Snowflake account and continuously sync your endpoint data with your cloud warehouse....

Connecting Node.js application to RavenDB Cloud

Connecting Node.js application to RavenDB Cloud

20 January 2025

What you will learn How to connect your Node.js application to a RavenDB Cloud instance How to verify that your connection is successfully established Introduction RavenDB Cloud is a secure fully managed cloud database ready to launch in minutes. It serves as database hosting, management studio, and managed services of backing up data. All in...

Connecting C# application to RavenDB Cloud

Connecting C# application to RavenDB Cloud

13 January 2025

What you will learn How to connect to your RavenDB Cloud instance with C# How to confirm your connection is established Introduction RavenDB Cloud is a managed RavenDB service ready to launch in minutes. It serves as database hosting, management studio, and managed services of backing up data. All in one place. Connecting your C#...

Upcoming Upgrade to 6.2 in RavenDB Cloud

Upcoming Upgrade to 6.2 in RavenDB Cloud

8 January 2025

Introduction RavenDB Cloud is rolling out upgrades on clusters to RavenDB version 6.2, bringing exciting new features and improvements to enhance your database experience. With the upgrade process beginning in February 2025 for Free and Development Tiers and continuing through September 2025 for Production Tier clusters, this is the perfect opportunity to explore what’s new...

Connecting Node.JS web application to RavenDB

Connecting Node.JS web application to RavenDB

23 December 2024

What you will learn How to connect your web application made with node.js to a RavenDB database How to confirm your connection is established Introduction Connecting your Node.js web application to RavenDB is a simple process. By the end of this tutorial, we will connect your Node.js app to the RavenDB database and be ready...

How to setup RavenDB with ASP.NET Core 8 application

How to setup RavenDB with ASP.NET Core 8 application

16 December 2024

What you will learn How to connect your ASP.NET Core 8 application to a RavenDB database How to confirm your connection is established Introduction Connecting your C# console application to RavenDB is a simple process. By the end of this tutorial, we will connect your C# app to the RavenDB database and be ready to...

How to Boost Queries by 800% Without Abandoning Your Relational System

How to Boost Queries by 800% Without Abandoning Your Relational System

5 May 2023

When DynamoDB, Redis, and Elasticsearch didn’t provide smooth and cost-efficient integration with their main PostgreSQL database, DPG Media integrated RavenDB into their system for faster complex queries. They saw an 800% performance increase and now have a far simpler and more cost-effective system, reducing their costs by 1/3. DPG Media’s relational system has become so...

Ideal Data Platform for Startups

Ideal Data Platform for Startups

25 April 2023

Startups often have limited resources and fast, unpredictable growth so they require software solutions that are effective, flexible, and efficient. RavenDB is a powerful NoSQL database that is designed with startups in mind. This article will explore some of the key reasons why RavenDB is a great choice for startups. Total Cost of Ownership Startups...

How ESO Provides Reliable Tech for Emergency Workers in the Field

How ESO Provides Reliable Tech for Emergency Workers in the Field

6 March 2023

RavenDB provides ESO with HIPAA compliance, on/off-line functionality, and the ability to automatically respond to data events in their field device solutions for emergency responders. Devices that are equipped with their app and a server continue to work without interruption whenever offline, data integrity is maintained, and data events are automatically securely streamed to and...

AI in Microservices Architecture: How to Streamline DevOps and Performance

AI in Microservices Architecture: How to Streamline DevOps and Performance

15 February 2023

CLSTRLobe DevOps chooses RavenDB for agile development in a microservices IoT deployment with over 80 databases. RavenDB provides flexibility, ease of duplicating databases, and use of data subscriptions for event sourcing in an AI application for agriculture. Data analysis is usually handled by SQL databases, with OLAP offering impressive functionality. Where these databases suffer is...

Accelerating DevOps, Performance, and Peace of Mind via RavenDB

Accelerating DevOps, Performance, and Peace of Mind via RavenDB

16 January 2023

Some modern databases provide agility for DevOps teams to realize their goals quickly. The question for IT managers to consider is: What aspects of a database should be dynamic so that my DevOps team will have maximum velocity? To stay competitive, release cycles must be as agile a process as possible. Organizations that can respond...

To Structure and Summarize Data from Various Sources HitHorizons Leverages RavenDB’s Unique Indexing Prowess

To Structure and Summarize Data from Various Sources HitHorizons Leverages RavenDB’s Unique Indexing Prowess

13 January 2023

RavenDB simplifies HitHorizon’s ability to organize and aggregate massive, heterogeneous data imports and reduce the DevOps costs of producing accurate reports while improving time to market of new features. About HitHorizons FinStat, through the project HitHorizons.com, aggregates data on European companies to improve the transparency of the business environment by providing firmographic data and statistical...

Playwaze Shows How to Quickly Release and Refine New Features

Playwaze Shows How to Quickly Release and Refine New Features

5 December 2022

RavenDB’s multi-model approach and unique features provide Playwaze with agility, cost-savings, and performance when developing or optimizing new features in a complex site and app. See how an organization of 6 people has created and refined a wealth of features with an impressive time to market. About Playwaze In addition to providing a digital platform...

For Better DevOps, Proteria Chooses RavenDB

For Better DevOps, Proteria Chooses RavenDB

30 November 2022

They get superb stability, cost-efficiency, and a user-friendly testing environment in the package. About Proteria Proteria is a leading Scandinavian shipping and customs logistics software company.  With about 14 million documents (3.5M of them handle business transactions), their freight system integrates smoothly with Europe’s most widely used transporters. What did they use before RavenDB? While...