• Slim your aggregates with Event Sourcing! - In the traditional approach, what we get is what we store. Our write model is too often used directly as our read model, because the typical… [Event-Driven by Oskar Dudycz]

Permalink | From 29 August 2022 to 04 September 2022 | Last updated on: Thu, 1 Sep 2022 21:08:42 GMT

• Fixed Partitions - When partitioning data across a set of cluster nodes we need a uniform distribution and to be able add and remove nodes to the cluster without causing a lot of data to be moved around. Unmesh Joshi explains how to do this by allocating data to a large number of virtual fixed partitions which are then allocated to the nodes. [Martin Fowler]
• How playing on guitar can help you to be a better developer? - The first time I did not become a musician was when my grandma tried to sign me to music school. During rehearsal, I stubbornly said I would… [Event-Driven by Oskar Dudycz]
• Key-Range Partitions - A Fixed Partition provides a good way to distribute data over many nodes when clients are accessing a single key at a time. If, however, a client wants a range of values, such as all names from "a" to "f", then they'll need to access every node. Unmesh Joshi Explains how a Key-Range Partition provides a better alternative for this kind of data access. [Martin Fowler]

Permalink | From 22 August 2022 to 28 August 2022 | Last updated on: Mon, 24 Oct 2022 23:19:31 GMT

• Gossip Seed configuration and Certificate Management for EventStoreDB - Nodes in a cluster can discover the other nodes using one of two methods - gossip seeds, or DNS discovery. [Event Store blog]
• 22.6.0 Release Notes - We are pleased to announce the official interim release of EventStoreDB OSS & Commercial version 22.6.0. This is an interim release and will be supported until October 2022. Read more about our versioning strategy here. The complete changelog can be found here. If you need help planning your upgrade or want to discuss support, please contact us here. [Event Store blog]
• What do the British writer and his fence have to do with Software Architecture? - Gilbert Keith Chesterton was a British writer from the turn of the 19th and 20th centuries. As for his times, we would call him an… [Event-Driven by Oskar Dudycz]
• Clock-Bound Wait - Although he's been quiet for a while on here, Unmesh Joshi has been working hard on more of his Patterns of Distributed Systems. In this first of a new batch, he looks at the difficulty of getting consistent reads from servers in the presence of the inevitable drifts between system logs. A Clock-Bound Wait adds a small wait time on a request for a value at a recent time. This way the server can be sure it's providing the correct value should it have changed during within the window of the clock lag. [Martin Fowler]
• Emergent Leader - Peer-to-peer systems treat each cluster node as equal; there is no strict leader. This means there is no explicit leader election process as happens in the Leader and Followers pattern. However, there still needs to be one cluster node acting as cluster coordinator for tasks such as assigning data partitions to other cluster nodes and tracking when new cluster nodes join or fail and take corrective actions. Unmesh Joshi explains how this is resolved with an Emergent Leader [Martin Fowler]
• Focus on business value: Open source framework vs. building your own - Before you build your own framework, you should read this. Previously, we discussed whether or not to even use a framework at all – and explored how often you may already be using a large variety of them without even questioning it. But now, we’re digging deeper into the advantages of using an open source framework like the Axon Framework (AF) as opposed to building your own framework to support Command Query Responsibility Separation (CQRS) and Event Sourcing (ES). [Blog]

Permalink | From 15 August 2022 to 21 August 2022 | Last updated on: Fri, 4 Nov 2022 18:36:45 GMT

• Securing Web APIs with Azure AD: Enabling Local Development - In the last post, we looked at creating the server application and corresponding Azure resources to secure it. [Jimmy Bogard]
• Why are we afraid of our decisions? - I don’t know if it will work well in production! Will it scale? What if we get too many users during Black Friday? Do you know those… [Event-Driven by Oskar Dudycz]
• 10 problems that Event Sourcing can help solve for you - I recently ended up in a discussion on when Event Sourcing is the right architecture style or not. As the universal answer to this question tends to be "it depends", I started thinking about the typical problems where I would use Event Sourcing. I came up with a couple of them, some more functional and some more technical. Here's a summary of those thoughts. [Event Store blog]
• Securing Web APIs with Azure AD: Enabling Local Development - Posts in this series: A Case Study Designing Authentication Schemes Authorizing Client Applications Building the Server Enabling Local Development Connecting External Clients Connecting Azure Clients Full example In the last post, we looked at creating the server application and corresponding Azure resources to secure it. If we try to test [Jimmy Bogard]

Permalink | From 08 August 2022 to 14 August 2022 | Last updated on: Mon, 7 Aug 2023 22:06:33 GMT

• Diagramming to Communicate - I recently discussed my diagramming style with an author of a book in my signature series. The post Diagramming to Communicate appeared first on Kalele. [Kalele]
• Securing Web APIs with Azure AD: Authorizing Client Applications - In our last post, we chose the OAuth 2.0 Client Credentials grant scheme to authenticate our APIs and daemon applications: API and daemon application calling an internal API. [Jimmy Bogard]
• 21.10.7 Release Notes - We are pleased to announce the official release of EventStoreDB OSS & Commercial version 21.10.7 long-term support (LTS). [Event Store blog]
• Securing Web APIs with Azure AD: Building the Server - In the last couple of posts, we looked at authentication and authorization options and picked some strategies for each. With those pieces chosen, we can now set about building our server. [Jimmy Bogard]
• Straightforward Event Sourcing with TypeScript and NodeJS - In the last two articles, I explained how to organise your business logic effectively, showing how proper typing and composition can help to… [Event-Driven by Oskar Dudycz]
• Concerned about Serverless Lock-in? Consider Patterns! - Design patterns have helped us improve software design for decades. In the cloud, they can also reduce our switching cost. That's magic! [The Architect Elevator]
• Securing Web APIs with Azure AD: Building the Server - Posts in this series: A Case Study Designing Authentication Schemes Authorizing Client Applications Building the Server Enabling Local Development Connecting External Clients Connecting Azure Clients Full example In the last couple of posts, we looked at authentication and authorization options and picked some strategies for each. With those pieces chosen, [Jimmy Bogard]
• Securing Web APIs with Azure AD: Authorizing Client Applications - Posts in this series: A Case Study Designing Authentication Schemes Authorizing Client Applications Building the Server Enabling Local Development Connecting External Clients Connecting Azure Clients Full example In our last post, we chose the OAuth 2.0 Client Credentials grant scheme to authenticate our APIs and daemon applications: API and [Jimmy Bogard]

Permalink | From 01 August 2022 to 07 August 2022 | Last updated on: Mon, 7 Aug 2023 22:06:33 GMT