Blog

Extending the Corda Bootcamp Token CorDapp Have you attended one of our Corda Bootcamps? If so, you would have had a day very well spent learning the basic concepts of Corda with some of our very talented Corda Evangelists. You would have learned to develop, deploy and run a working CorDapp by the end of the ...

Summary Corda’s stellar transaction throughput has already been examined and documented. In this article we discuss a separate experiment that measures Corda’s transaction rate with attachments. I created one CorDapp called GenerateMockAttachments which would automatically create a set of test files on a source node. Once generated, I used another CorDapp called TriggerAttachmentDownload which sent ...

TL;DR: You can now easily deploy Corda Enterprise along with Corda firewall in a Kubernetes cluster Introduction Deploying a Corda node along with Corda firewall manually can be a complex and time-consuming task. In the last few months I have created a solution to deploy Corda Enterprise with a Corda firewall inside a Kubernetes cluster. ...

Corda flows are written as linear Kotlin or Java code, but need to be enriched with a lot of other activities when being executed, e.g.: Checkpointing their current state for fault tolerance Executing subflows Sending and waiting for receipt of messages Asynchronous calls and waiting for results. Corda achieves this by running them in a ...

  Often while developing CorDapps we might want to have relationships between different ContractState. While this is a common concern that we might come across while writing CorDapps, there was no formal design pattern to achieve this. Corda 4 introduced StatePointer which establishes a formal design pattern to link one ContractState to another. Before diving into ...

Corda Firewall — Components, PKI, Deployment As compared to traditional client-server applications, distributed blockchain applications like Corda interact directly with each other by establishing a P2P connection. Corda nodes connect to the database, which has sensitive information. In enterprise production deployments, it’s a considerable risk to establish a P2P connection with the counter-party directly. One option is ...

Connect node to PostgreSQL using admin access in development mode This blog post shows you how to configure your node to connect to a Postgres database in development mode, instead of H2 which is used by default. Generally, when connecting to a database we consider two perspectives-development and production. From a development perspective, Corda lets the ...

Node applies the schemas automatically onto the database We have seen how to set up and connect to a PostgreSQL database in the previous blog post. In this blog, we will see how we can upgrade custom CorDapp database tables using Liquibase scripts in development mode. Both the internals of the Corda and external CorDapps use ...

Database admin manually running DB scripts generated by database-management-tool We have seen how to set up and connect production Corda node to a PostgreSQL database in the previous blog. We also saw how to perform a CorDapp database upgrade in the previous post. In this post, let’s see how we can upgrade CorDapp tables by ...

Database administrator applying database scripts generated by the database management tool This blog post shows you how to configure your node to connect to a Postgres database in production mode, instead of H2 which is used by default. We saw how the node connects to a database in development mode in the previous post, by using ...