description:How to calculate resource credit cost for transactions.
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Since HF20 a Resource Credit (RC) system has been implemented to manage the number of transactions (comments, votes, transfers, etc) you can execute on the blockchain at any given time. This recipe will look at how to calculate your current RC and also what the current RC cost is for a given transaction. This recipe is far more 'basics oriented' than most. For a more in-depth description of how RC's work consume [this excellent RC demo](https://github.com/steemit/rcdemo) created by Steemit's Blockchain Team.
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## Allocation of RC to blockchain resources
An in depth look at how RC's are assigned to each of the three resources (CPU megacycles/state memory/history size) can be found in Steemit's wiki articles for [RC Bandwidth System](https://github.com/steemit/steem/wiki/RC-Bandwidth-System) and [Parameters](https://github.com/steemit/steem/wiki/RC-Bandwidth-Parameters)
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An in depth look at how RC's are assigned to each of the three resources (CPU megacycles/state memory/history size) can be found in Steemit's wiki articles for [RC Bandwidth System](https://github.com/steemit/steem/wiki/RC-Bandwidth-System) and [Parameters](https://github.com/steemit/steem/wiki/RC-Bandwidth-Parameters)
description:All `config.ini` options available to `steemd`
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When running `steemd` for the first time, once the startup banner appears, press `Ctrl+C` to exit. Running `steemd` like this will generate a data directory and a pristine copy of `config.ini`.
The overarching goal is to stop using [`condenser_api.broadcast_transaction_synchronous`]({{'/apidefinitions/#condenser_api.broadcast_transaction_synchronous' | relative_url }}) but we still want the benefits.
This recipe will take you through the process of streaming blockchain transactions, both from `head_block_num` and `last_irreversible_block_num`, and explain the presence/absence of virtual operations in the streamed transactions.