> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blocklight.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Intelligent Caching

> Reduce RPC calls with TTL-based caching

Caching is **always enabled** in Blocklight to optimize performance and reduce RPC calls. Configure cache TTL (Time To Live) in [analysis configuration](/deployment/configuration).

## Cache Strategy

Blocklight uses in-memory caching with configurable TTLs:

* **Transactions:** 5 minutes TTL (default) - recent transaction data

## Configuration

Configure cache TTLs in `config.yaml`:

```yaml theme={null}
analysis:
  transaction:
    cache_ttl_seconds: 300   # 5 minutes (min: 60, max: 86400)
```

## Performance Impact

Caching significantly reduces RPC calls and improves latency:

* **Transaction receipts**: Cached for 5 minutes to balance freshness and performance

Caching is crucial when using [array methods](/rules/array-methods) and analyzing transaction data, as it prevents redundant RPC calls for the same contract addresses.