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Episode Info: We take an introspective look into what’s wrong with Michael’s life, Allen keeps taking us down random tangents, and Joe misses the chance for the perfect joke as we wrap up our deep dive into Hasura’s 3factor app architecture pattern. For those reading these show notes via their podcast player, this episode’s full show notes can be found at Sponsors – Sign up today for a free 14 day trial and get a free Datadog t-shirt after creating your first dashboard. O’Reilly Software Architecture Conference – Microservices, domain-driven design, and more. The O’Reilly Software Architecture Conference covers the skills and tools every software architect needs. Use the code BLOCKS during registration to get 20% off of most passes. – Level up your coding skills, quickly and efficiently. Visit to get 20% off any course.Survey Says … Anonymous VoteSign in with WordpressWhich relational database is your go to?Postgres, the elephant in the room.MySQL, the digital adventures of Flipper.SQL Server. _It looks like you're trying to create a database._ -ClippyOracle, the big red box.RDBMS? pfft ... NoSQL.Graph databases are where it's News Thank you to everyone that left us a review:iTunes: codeand40k, buckrivard Stitcher: Jediknightluke, nmolina Factor Tres – Async Serverless The first two factors, realtime GraphQL and reliable eventing, provide the foundation for a decoupled architecture that paves the way for the third factor: async serverless. These serverless processes meet two properties: Idempotency: Events are delivered at least once.Out of order messaging: The order the events are received is not guaranteed.Traditional vs 3factor app Traditional application3factor applicationSynchronous procedure code.Loosely coupled event handlers.Deployed on VMs or containers.Deployed on serverless platforms.You manage the platform.The platform is managed for you.Requires operational expertise.No operational expertise necessary.Auto-scale when possible.Auto-scales by default. Benefits of serverless architectures No-ops: no run time to manage.Free scale: scales based on utilization.Cost: you pay for utilization.Sample serverless providers AWS LambdaGoogle Cloud FunctionsAzure FunctionsZeitOpenFaasKubelessKnativeWhen to use the 3 Factor app? Multiple subsystems that need to subscribe to the same events.Low latency events.Complex event processing.High volume, velocity data.Benefits Producers and consumers are decoupled.No point-to point-integrations.Consumers can respond to events immediately as they arrive.Highly scalable and distributed.Subsystems have independent views of the event stream.Challenges Guaranteed event delivery.Processing events in order.Processing events exactly once.Latency related to initial serverless start up time.The five key phases of software dev...
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