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polkadot-mempool-explorer's Introduction

Polkadot Mempool Explorer

Mempool Explorer allow users to monitor pending transactions on Polkadot.

Environment setup

  • Install Node.js
    • Recommended method is by using NVM
    • Recommended Node.js version is v12
  • Install Docker

Demo

mempool.dot.protofire.io

Custom Polkadot Node

In order to track extrinsics lifecycle. We added a new RPC method (author_trackExtrinsic) on Substrate core.

This basically allows someone to subscribe and track status changes in the extrinsics lifecycle, for example movements getting in or out of queues, and everything that matters for us before including those extrinsics in blocks.

Get Started

In the project directory, you can run:

npm start:dev

Runs the docker containers in the development mode.
Open localhost:8084 to view it in the browser.

The page will reload if you make edits.
You will also see any lint errors in the console.

npm down

Stops containers and removes containers, networks, volumes, and images created by npm start:dev

npm restart

Restarts api and web services.

npm logs

Displays log output from all services.

npm web:rebuild

Removes web container and build it again

npm api:rebuild

Removes api container and build it again

npm api:restart

Restarts api service.

npm web:restart

Restarts web service.

npm api:logs

Displays log output from api service.

npm web:logs

Displays log output from web service.

npm polkadot-local:logs

Displays log output from custom polkadot-local service.

npm polkadot-westend:logs

Displays log output from custom polkadot-westend service.

npm polkadot-main:logs

Displays log output from custom polkadot-main service.

Contributing

Code of Conduct

Code of Conduct

License

Mempool Explorer is Apache 2.0 licensed.

polkadot-mempool-explorer's People

Contributors

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polkadot-mempool-explorer's Issues

Analysis of extrinsics and tools available

Analyze current explorers, understand substrate extrinsic's life cycle, connect to testnets and local nodes, put transactions in pending queues, query node's transactions queues via RPC calls and/or JS polkadot module
Select first trusted nodes.

Define monitoring

Define monitoring mechanisms on our dev environment.
As first approach think of minimal monitoring metrics that we should implement to know that our service is up and running.

Implement core backend

Implement a backend in order to be able to showing the last 10 transactions that entered in the pending Queue, regardless if they are still inside the queue or they has gone from there. This requires a mechanism to query the nodes constantly, store and update some data.
We should see one different set of 10 transactions for each different networks that we are exploring. Take this in account when designing or implementing the collections or database schema database.

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