State Change Indexer: ContractId Cache

[gouthamp-stellar]

• Implement simulateFunction in rpc_service.go.
• Create a Contract ID Cache with the following methods:
  • Name(contractID): Retrieves the contract name.
  • Symbol(contractID): Retrieves the contract symbol.
  • Set(contractID, name, symbol): Stores the contract name and symbol in the cache.
• Caching Logic:
  • Name and Symbol first check the contractidcache table for existing values.
  • If no value exists or the entry has expired (based on ts), they call simulateFunction to fetch the data and update the cache.

design: https://docs.google.com/document/d/10Z2Apl6gJYkJp0BXILWn5_vJL4MmZ0QZ4QrRqbW_EHw/edit?tab=t.0