I am creating a .Net core class library which I plan to publish as a Nuget package. As part of the requirement, I need to access a Oracle Coherence cache data source. Now Coherence dll doesn't seem to support .Net Core project at this moment. The .Net core application will run in non-windows environment. Has anybody faced a similar situation ? Does anybody know if Oracle Coherence is going to come up with .Net Core support ?
Yes, you can integrate you .NET module to a Coherene Cluster with the Extended Client API that are available in Java, .NET and C++.
I share with you the official doc:
https://docs.oracle.com/middleware/12213/coherence/develop-remote-clients/toc.htm
and .NET API:
https://docs.oracle.com/middleware/12213/coherence/net-reference/toc.htm
Related
I am building an MVC Web API (Service) with Views returned in specific cases. As an architectural decision, I've been directed to NOT build the service project in .NET Framework 4.*. Rather, I am to attempt .NET 5.0 first, and then Core 3.1 if 5.0 doesn't work.
This service project in my solution will depend on a few class library projects, call them DataLibrary, ComplexLibrary, and DocLibrary. DataLibrary will depend on a Nuget package of Oracle, be it ODP or Oracle Managed Data, in order to query an Oracle database via an Oracle Package on that database. DocLibrary will depend on a Nuget package of Aspose Word & Aspose PDF. ComplexLibrary will depend on Oracle AND Aspose.
Here's my dilemma:
Aspose Word's latest stable release (21.6) will report that it is compatible with 5.0 and Standard 2.0, but not .NET Core.
Oracle Managed Data reports that it is compatible with Standard 2.1 or Standard 2.0, but not 5.0 or .NET Core.
My own libraries have reported that they are not compatible with my API .csproj if...
3a. The API is 5.0 and the libraries are .NET Core or .NET Standard
3b. The API is Core 3.1 and the libraries are .NET Standard.
Since my compile script naturally requires a run of Nuget to retrieve all the necessary dependencies, I cannot get a clean compile because I seemingly have no combination of versions for my WebAPI and libraries that satisfy each others' compatibility needs. Since Standard libraries are the only common .NET version that satisfy the needs of both Aspose & Oracle, What available version for my WebAPI (i.e. I don't believe that Standard is an option for anything other than a class library) is compatible with .NET Standard libraries?
Thanks.
Please see the following article https://learn.microsoft.com/en-us/dotnet/standard/net-standard.
.NET Standard is not a framework it is kind f specification and .NET Core, .NET 5, Mono framework etc are .NET Standard implementations.
So for library projects I would select .NET Standard and for the service .NET Core or .NET 5 (which is actually the next version of .NET Core)
Well, don't I feel silly.
Turns out, the issue wasn't incompatibilities within Aspose, Office, .NET Core, 5.0, and Standard, but a failure of a prior version of NuGet to handle the different versions.
While my VS 2019 install was able to compile the whole solution effectively, my local install of NuGet was not. This was due to VS2019 likely using the most up-to-date version as of this post (5.9.#), while my locally installed version was 4.9.#. Thus, VS was able to sail through while my compile script kept failing at the NuGet stage (which I have included prior to the actual compile.) Once I ran a NuGet update, everything was good to go.
Long story short: KEEP YOUR NUGET VERSION UP-TO-DATE!!!
Existing .Net framework 4.6.2 based web api project & class libraries have been migrated to .net core 2.1 webapi project & its class library have been migrated to .net standard 2.0 with very minimal core, mostly as part of migration either existing nuget package has been upgraded and existing package was swapped with .core compatible SDK version with very minimal/negligible code changes.
Right after the migration application's entire functionalities facing performance issue.
Once.Net framework based out code has been migrated to .net core, is the performance issue expected one?
Any effective open source tool to profile & measure performance?
Any mitigation to solve these performance issue? please suggest
I recently started with ASP.Net Core 2.2. I have a situation where I need to use legacy SAP Connector library within my application. After some reading I created my application to target full .Net Framework 4.6.1. I have a test class that references the SAP Connector library.
However, when I run my application, it breaks within Startup.cs right where it calls this line:
app.UseMvc();
Checking the LoaderExceptions property, it shows the error:
Could not load file or assembly 'sapnco, Version=3.0.0.42, Culture=neutral, PublicKeyToken=50436dca5c7f7d23' or one of its dependencies. An attempt was made to load a program with an incorrect format.
My hunch is that although ASP.Net Core supports full .Net Framework, the referenced assembly has to go as far back to particular version of .Net Framework and no less. Although I can't find any concrete info on that.
Please help!
For SAP Connector, I think you need to contact SAP Forum Support to confirm if the SAP Connector .NET Core version is available or will be available.
From the perspective of .Net Core, I am afraid there are no connectors and no plans to develop such connectors.
We currently have a web api targeting .NET 4 framework which is hosted within IIS using an application pool which is using .NET 4 CLR.
We are investigating migrating the web api from .NET 4 to .NET Core 2.1 (for performance improvements). The web api has other DLL references which have been built using .NET 4 framework. I have a simple proof of concept up and running using .NET Core 2.1 and the references which had been built using .NET 4 framework appear to have imported fine as I can reference them and the project builds.
If I have the new .NET Core 2.1 web api referencing the 3rd party DLLs using .NET framework 4 which is then going to be hosted in IIS using the CLR 4... how would we see any performance increase? If everything is being run using the CLR 4, is that not the bottleneck for performance? Or is it the binaries that the CLR reads being more performant where you will see better performance?
Any guidance would be greatly appreciated as I'm very confused at the moment!
Thanks
It depends on how you're handling things. .NET Core 2.0+ fully supports .NET Standard 2.0, which has an API footprint large enough to cover most .NET Framework functionality. As a result, the compiler will let you add a .NET Framework library reference to a project that's actually targeting .NET Core 2.0+. There's no guarantee that the library will actually work (and you get a warning to that effect), but unless it's using Windows-specific APIs, there's a very good chance it will function fine.
Assuming this is the case with your .NET Framework libraries and you're actually targeting something like .NET Core 2.1, then you are not in fact using .NET Framework, and you don't even need .NET Framework installed on the server you're deploying to. All the requisite framework dependencies will come from the .NET Core runtime, or can even be packaged along with your app if you opt for a self-contained deployment. In that case, once compiled, it's virtually inconsequential that the libraries you referenced actually targeted .NET Framework.
If however the libraries do not work without full .NET Framework, you can still build a .NET Core app, but you'll be forced to continue to target .NET Framework, rather than .NET Core. In that case, you will of course be reliant on the .NET Framework CLR, with the performance drain that entails. That said, an ASP.NET Core app, for example, is still generally more performant than something like an ASP.NET MVC app, so you will get some gains - just not as much as if you were actually targeting .NET Core.
Regardless of what you ultimately end up targeting, your app is actually served via Kestrel. IIS acts merely as a reverse proxy.
I am planning to use Enterprise Library for database access on a Web API project which is going to be built using .Net core app.
But I am unable to install Enterprise library using NuGet as the latest version of Enterprise Library is not compatible with.Net core app framework.
Note, I don't want to use Entity Framework.
Appreciate if the community can help on this.
If you can migrate your application to .Net Core 2.0 which is still in preview mode, but Microsoft promised to release it by Q3 2017, I have forked out the Enterprise Library project and ported that to .Net Core 2.0 which you can find it under this repository:
https://github.com/Chavoshi/EnterpriseLibrary.NetCore
And also this is the Nuget package for Data Application Block:
https://www.nuget.org/packages/EnterpriseLibrary.Data.NetCore
Still there are some missing parts such as OdbcFactory and OleDbFactory which they are not available in .Net ported APIs (Or Nuget package is not published yet), but I am keep working on them to maybe port them by myself or update it since the API will be available. I appreciate anyone who can contribute on this project as well. :)