TopAccesses — Most Accessed Accounts and Storage Slots

{"subscribe": ["TopAccesses"]}

Message Format

{
  "seq": 45,
  "TopAccesses": {
    "account": [
      {"key": "0x1234...abcd", "count": 15234},
      {"key": "0x5678...ef01", "count": 8921}
    ],
    "storage": [
      {"key": ["0x1234...abcd", "0xabcd...1234"], "count": 5432},
      {"key": ["0x5678...ef01", "0x0000...0001"], "count": 3210}
    ]
  }
}

Fields

`account[]`

Field	Type	Description
`key`	string	Account address
`count`	number	Number of accesses

`storage[]`

Field	Type	Description
`key`	[string, string]	Tuple `[contract_address, storage_slot]`
`count`	number	Number of accesses

Description

TopAccesses uses the Space-Saving algorithm to efficiently track the most frequently accessed accounts and storage slots.

Lists are sorted by count (descending)
Data resets periodically
Useful for identifying hot spots in storage

Usage Example

{"subscribe": ["TopAccesses"]}

ws.onmessage = (event) => {
  const msg = JSON.parse(event.data);
  if (msg.top-accesses) {
    console.log("Top accounts:");
    for (const a of msg.TopAccesses.account.slice(0, 5)) {
      console.log(`  ${a.key}: ${a.count} accesses`);
    }
    console.log("Top storage slots:");
    for (const s of msg.TopAccesses.storage.slice(0, 5)) {
      console.log(`  ${s.key[0]}[${s.key[1]}]: ${s.count} accesses`);
    }
  }
};

Frequency

Periodic (not tied to blocks). Significantly less frequent than other metrics.