Using RPC Node

Pros:

1. Direct Access: You get direct access to the blockchain, which allows you to read any data without relying on a third party's indexing.

2. Real-Time Data: You can fetch the most up-to-date information directly from the blockchain.

3. Flexibility: You have complete control over the queries you make and the data you retrieve.

4. Provider Options: There are multiple providers (e.g., Infura, Alchemy, QuickNode) that offer scalable infrastructure for connecting to the blockchain.

5. Cost-Effectiveness for Small Scale: For small-scale projects or minimal usage, using a node RPC can be cost-effective.

Cons:

1. Performance: Querying the blockchain directly can be slower and less efficient compared to using a pre-indexed service like The Graph.

2. Complexity: You may need to handle low-level details and optimizations yourself, which can increase development complexity.

3. Rate Limits: Many providers impose rate limits, which can restrict high-frequency queries.

4. Cost for High Usage: For large-scale applications with high-frequency data needs, the cost can increase significantly.

In summary, using Node RPC from RPC providers offers direct access to blockchain data, enabling real-time updates and flexible querying. It can be cost-effective for small-scale projects with minimal usage, and there are multiple providers available to scale infrastructure. However, this approach may be slower and less efficient compared to pre-indexed services like The Graph, and it requires more complex management and optimization. Providers might impose rate limits, and costs can increase significantly for high-frequency or large-scale applications.