RESOURCE CREDIT (RC) LIMITS ​

On the backend, Mana is managed by a Resource Credit system. Developers need to manage these limits in their dApps to ensure a smooth user experience.

There are two basic terminologies that must be understood.

Resource Credit: The available amount of Mana. 1 RC = 1 Mana.

RC Limit: The relative amount of Mana that can be spent for any given transaction, expressed in percentage.

Since the Mana cost of a transaction is managed by an AMM that acts in real time, we cannot predict the exact amount of Mana required, however we can be reasonable close, which is why we must set an RC Limit which intuitively, puts an upper bound to how much Mana can be consumed in any given transaction.

Example: ​

If Account 0 has 250 KOIN then it will also have 250 Mana.

For any given transaction, if the sender specifies rclimit = 100%, then the transaction can consume up to 250 Mana.

If the sender specifics rclimit = 1% then the transaction can consume up to 2.5 Mana.

Developer Gotcha! ​

If a sender specifies rclimit = 100% and tries to complete 2 consecutive transaction without waiting for their Mana to recharge back to 100%, then the second transaction would not have access to 100% of the resource credits and fail!

Protip: rclimit should be set to the lowest value that the transaction is expected to consume. If you expect it to consume 0.75 Mana, then set the rclimit in Koinos-CLI, Kondor or KoinosBlocks (whichever interface you are using) value equal to a percentage that is slightly above 0.75 Mana.

• For a wallet with 100 $KOIN, use rclimit = 1% to allow 1 Mana to be consumed.

• For a wallet with 300 $KOIN, use rclimit = 0.33% to allow 1 Mana to be consumed.