Skip to main content

Microsoft Orleans Grain Persistence using PostgreSQL

I didn’t found the documentation really clear on the steps involved when using Grain Persistence in combination with PostgreSQL.

So here is my attempt to describe the process:

    • Invariant should be set to ‘npgsql’
    • ConnectionString should be set to the connection to the PostgreSQL instance you want to use
    • UseJsonFormat should be set to true as PostgreSQL has good Json support.
  • Let your grain inherit from Grain<> and specify a state object:
  • Add a StorageProvider attribute on top of your Grain and set the name to the storage name you used inside the cluster config
    • In our example we had set this to ‘OrleansStorage’:
  • Execute the PostgreSQL-Main.sql and PostgreSQL-Persistence.sql scripts inside the OrleansAdoNetContent/PostgreSQL folder to create the necessary database objects
  • Now you are good to go!
Labels:

Popular posts from this blog

DevToys–A swiss army knife for developers

As a developer there are a lot of small tasks you need to do as part of your coding, debugging and testing activities.  DevToys is an offline windows app that tries to help you with these tasks. Instead of using different websites you get a fully offline experience offering help for a large list of tasks. Many tools are available. Here is the current list: Converters JSON <> YAML Timestamp Number Base Cron Parser Encoders / Decoders HTML URL Base64 Text & Image GZip JWT Decoder Formatters JSON SQL XML Generators Hash (MD5, SHA1, SHA256, SHA512) UUID 1 and 4 Lorem Ipsum Checksum Text Escape / Unescape Inspector & Case Converter Regex Tester Text Comparer XML Validator Markdown Preview Graphic Color B
Read more

Help! I accidently enabled HSTS–on localhost

I ran into an issue after accidently enabling HSTS for a website on localhost. This was not an issue for the original website that was running in IIS and had a certificate configured. But when I tried to run an Angular app a little bit later on http://localhost:4200 the browser redirected me immediately to https://localhost . Whoops! That was not what I wanted in this case. To fix it, you need to go the network settings of your browser, there are available at: chrome://net-internals/#hsts edge://net-internals/#hsts brave://net-internals/#hsts Enter ‘localhost’ in the domain textbox under the Delete domain security policies section and hit Delete . That should do the trick…
Read more

Azure DevOps/ GitHub emoji

I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.
Read more