L13 – Communication of Ethereum Nodes (CBDE Course)

In this lecture we are talking about the way Ethereum nodes communicate with clients. If you are programming a distributed application then you need to get access to the blockchain somehow. Distributed applications usually have two parts: One part is HTML/Javascript. The other part is some smart contract deployed on the blockchain. And there is a standardized way for the communication between the HTML/JS part, so, the website and the…

Import Ethereum blockchain transactions to MongoDB, ElasticSearch, Hazelcast with JavaFX/Web3j

Import Ethereum blockchain transactions to MongoDB, ElasticSearch, Hazelcast with JavaFX/Web3j

starting the application with the graphical interfacewaiting for the hazelcast cluster to startsetting up the import parametersdefaults loaded from application.jsonconfigurable target database, block range and db namefirst import into hazelcastfull block range available and imported without delaysecond import into mongoDBand finally an import into ElasticSearch(choppy recording due to high cpu usage)starting an import in the background for new blockschecking out the imported blocks in MongoDBimporting newly mined blocks into ElasticSearchalmost…

Adoption of Blockchain Protocol Standards | Julian Leitloff, Founder and CTO of Fractal

Adoption of Blockchain Protocol Standards | Julian Leitloff, Founder and CTO of Fractal

Hi everyone.I’m Julian and I’m a co-founder of Fractal.We do identity and payment solutions for onboarding folks to Web3.0 protocols.So, I want to talk about not how to design protocols, but how to enable adoption of theseprotocols.And for that, I want to start with the first definition.What I perceive as, what this thing is – a protocol.And how can we take a look at that.Maybe first heads up.Even though I’m…