Queried by: developerswallets
The Big Picture
General rate limiting for account transactions. Tracks the last block when any rate-limited transaction was submitted by an account.
Use Cases
- Check transaction cooldowns
- Debug rate limit errors
- Build transaction timing tools
Purpose & Usage
Purpose
Track transaction activity for rate limiting.
Common Query Patterns
- Query by account address
Query Keys
| # | Name | Type | Description |
|---|---|---|---|
| 1 | key1 | AccountId | key1 (AccountId) (hex -> SS58) |
Stored Value
Relationships
Modified By
Code Examples
import { ApiPromise, WsProvider } from "@polkadot/api";
import { stringCamelCase } from "@polkadot/util";
const provider = new WsProvider("wss://entrypoint-finney.opentensor.ai:443");
const api = await ApiPromise.create({ provider });
// Query LastTxBlock storage
const key1 = "5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY";
const result = await api.query
[stringCamelCase("SubtensorModule")]
[stringCamelCase("LastTxBlock")](
key1
);
console.log("LastTxBlock:", result.toHuman());On-Chain Activity
Write Frequency
●●●●●○ High 1M–10M est. writes
1M–10M estimated writes
#14 most written storage item
Write Source User Extrinsics
Modified via user-submitted extrinsics
As of block 7,429,232
Runtime Info
View Source- Pallet
- SubtensorModule
- Storage Kind
- Map
- First Version
- v101
- Current Version
- v393