Summary Introduction Architecture Overview How neard works How Sync Works Garbage Collection How Epoch Works Transaction Routing Transactions And Receipts Cross shard transactions - deep dive Gas Receipt Congestion Meta transactions Serialization: Borsh, Json, ProtoBuf Proofs Resharding V2 How neard will work Catchup and state sync improvements Malicious producers and phase 2 Storage Storage Request Flow Trie Database Format Flat Storage Network Gas Cost Parameters Parameter Definitions Gas Profile Runtime Parameter Estimator Practices Overview Rust 🦀 Workflows Run a Node Deploy a Contract Run Gas Estimations Localnet on many machines IO tracing Profiling Working with OpenTelemetry Traces Code Style Documentation Tracking Issues Security Vulnerabilities Fast Builds Testing Python Tests Testing Utils Test Coverage Protocol Upgrade Advanced configuration Networking Custom test networks Starting a network from mainnet state Misc Overview State Sync Dump Archival node - recovery of missing data