Block Rotation
Block rotation on a SKALE Chain enables a limit on the size of the hard drive space that is occupied by blocks on core consensus nodes and full-sync nodes. The current default size of this space is 12.6 GB.
Each SKALE Chain maintains a minimum to maximum number of blocks, which are the 80% to 100% of the above respectively, meaning the most recent 20% of the blocks.
Each database contains:
- blocks
- transactions and their receipts
- log blooms
- “best” (lastBlockHash, best block of the canonical chain)
- “chainStart” (firstBlockHash, use when full chain isn’t available, for example after snapshot import)
API Changes
| Calls | Changes |
|---|---|
| eth_getBlockByNumber/eth_getBlockByHash | may return null |
| eth_getBlockTransactionCountByNumber | may return null |
| eth_getBlockTransactionCountByHash | may return null |
| eth_getUncleCountByBlockNumber | may return null |
| eth_getUncleCountByBlockHash | may return null |
| eth_getTransactionByBlockHashAndIndex | may return null |
| eth_getTransactionByBlockNumberAndIndex | may return null |
| eth_getUncleByBlockHashAndIndex | may return null |
| eth_getUncleByBlockNumberAndIndex | may return null |
| eth_getTransactionByHash | may return null |
| eth_getTransactionReceipt | may return null |
| eth_getFilterLogs | will treat removed blocks as if they have 0 logs |
| eth_getLogs | will treat removed blocks as if they have 0 logs |