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An extension to LiquidProjections that uses RavenDB for storing projections.

C# 95.76% PowerShell 3.04% Shell 1.20%

event-sourcing liquidprojection ravendb

liquidprojections.ravendb's Introduction

Liquid Projections

Liquid Projections (or LP for short) is a set of highly efficient building blocks that each provide value on their own, but shine when used together to build synchronous and asynchronous projectors. It’s the culmination of years of (painful) experiences and has been battle-tested in production for almost two years now. It’s distributed as a collection of NuGet packages that ensure you only need to take dependencies on things you really need. Read more about this project at www.liquidprojections.net.

What is this repo?

This repository holds the source code for the basic building blocks for creating event maps, simple storage-agnostic projectors, collecting projection statistics and exposing statistics as HTTP APIs. It builds the NuGet packages LiquidProjections, LiquidProjections.Abstractions, LiquidProjections.Owin, LiquidProjections.Testing,

How to get started?

See the Getting Started documentation.

liquidprojections.ravendb's People

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dennisdoomen ddd-cqrs-es arublevsky tomachristian malclear

liquidprojections.ravendb's Issues

Projector sample lacks the use of child projector

Unlike in the "ExampleHost" sample project in LiquidProjections, where there is an example of the use of a child projector (https://git.io/fjSAJ), there does not seem to be an example in LiquidProjections.RavenDb. Could that be added?

Cancellation token in exception handlers

RavenProjector has the same issue as Projector in liquidprojections/LiquidProjections#102

IHaveIdentity required by read model classes

I'd like to keep my Component.Query project used for my API seperate from my Component.Projections project by having a shared Component.ReadModel assembly.

The Component.Projections would include the references to LP, NEventStore polling client etc.

My API would have no dependencies on these libraries and just query the RavenDB directly for the read model.

However the LP RavenProjector requires that the read model implement IHaveIdentity.

I thought perhaps have a container class in the Component.Projections project that wraps the read model and implements IHaveIdentity... but I assume this will cause Raven to serialize this type and cause problems when querying.

What is ths suggested way around this?

Don't retry succeeded transactions

The dispatcher might decide to retry a batch of transactions, but since the projector has it's own batching, some of the transactions could already be successfully handled and committed.

See liquidprojections/LiquidProjections.NHibernate#7

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