Sergei Sumarokov

## Changes ## How to test these changes? ## Related issues

CPU spikes solutions for crawlers server: - Set `CPUQuota` for each crawler. Docs: https://www.freedesktop.org/software/systemd/man/systemd.resource-control.html - Logic on top of all crawlers to run all works under control

Missing block receiptsRoot

1

Because of typo not crawled block's `receiptsRoot`, noticed at: - Ethereum block: `14829804` - Polygon block: `28672180`

Node balancer configure itself with ec2 tags

1

Node balancer during deployment and service restart should gather information about active nodes from instances tags.

As reorg defense

Replacement of requests to database instead of nodes will unload our node servers and also increase response time to end user. Ir require mapping of database block/transactions data to blockchain...

Rebuild status page to be more informative and responsive at mobile screen with wide rows. Good example of status page: https://www.redditstatus.com/

txpool crawler after restart adds huge pack

1

When new update uploaded to server and crawler restarted after a while (1 min or so) it found huge pack of not reported transactions and starting add them. ``` ethereum-txpool[173043]:...

When new transaction appeares in a list of transactions on Subscriptions view at frontend it should be colorized to be able to identify it is new transaction.

Infrastructure improvements

1

Currently, the infrastructure of moonstream servers is at a level that allows it to ensure reliable operation of the service. ### Version 2. Current status - There are 2 servers...