Production Infra: RPCs, Mempools, Private Order Flow

RPC providers (Alchemy, Infura, QuickNode, Helius, Triton), private mempools (Flashbots Protect, MEV-Blocker, MEV-Share), bundle submission (Flashbots, BloXroute, Titan, Beaverbuild), and latency/redundancy engineering.

30 min · expert · part of Trading Algorithms & Market Microstructure

Infrastructure Is the Strategy

A strategy designed in a Jupyter notebook does not make money. A strategy that runs reliably against live mainnet, on the right RPC topology, with private order flow, with bundle-aware execution, with redundancy and observability — that strategy makes money. The gap between research code and production code is wider in on-chain trading than in most domains because every component of your stack interacts with the adversarial conditions described in Lesson 1. This lesson is the operational playbook for taking a strategy live. We cover RPC providers (Alchemy, Infura, QuickNode for EVM; Helius and Triton for Solana), private mempools (Flashbots Protect, MEV-Blocker, MEV-Share), bundle submission paths (Flashbots Builder, BloXroute, Titan, Beaverbuild), and the engineering practices — colocation, redundancy, observability — that distinguish operations that survive their first stressful month from those that do not. The recurring theme: do not save money on infrastructure if your strategy depends on the infrastructure performing under stress. Cheap RPC = missed opportunities and rate-limit errors at the worst moments. No private order flow = MEV tax on every trade. No bundle submission = losing every competitive race. No redundancy = a single failure takes down the operation. The infrastructure choices made before the first trade is sent are typically the difference between a profitable operation and a money-losing one running the exact same strategy logic.

Also in this lesson

EVM RPC Providers: Alchemy, Infura, QuickNode
Solana RPC: Helius, Triton, Jito
Private Mempools: Flashbots Protect, MEV-Blocker, MEV-Share
Bundles and Builders: Flashbots, BloXroute, Titan, Beaverbuild
Latency, Redundancy, Observability: The Operational Layer

Key terms

Alchemy: Largest EVM RPC infrastructure provider as of 2025. Strong enhanced APIs, debug/trace methods, WebSocket support, and broad chain coverage including Solana.
Helius: Leading Solana RPC infrastructure provider with standard JSON-RPC plus enhanced APIs, indexed transactions, NFT helpers, and webhooks. Standard for Solana trading and dApp operations.
Jito: Modified Solana validator client and block engine that enables searcher bundles on Solana with explicit tip payments. Functional analog to Flashbots/MEV-Boost on Ethereum.
Flashbots Protect: Original and most widely used private RPC. Routes transactions directly to participating block builders without public-mempool broadcast, eliminating most sandwich risk.
MEV-Blocker: Community-operated private RPC operated by Cow Protocol and partners. Distinguished by explicit backrun-value rebates returned to the originating user.
MEV-Share: An order flow auction model where transaction existence is broadcast to searchers who bid for the right to interact, with surplus shared back to the originator.
Bundle: An ordered set of transactions that a builder agrees to include atomically — either all of them in the specified order in one block, or none. Primitive for atomic arbitrage, liquidation execution, and conditional flows.
Flashbots Builder: Original and major Ethereum block builder. Open-source builder software with canonical Flashbots Bundle API. One of several major builders alongside BloXroute, Titan, and Beaverbuild.
Beaverbuild: Significant Ethereum block builder with substantial market share. Direct bundle submission and consistent inclusion track record.
Colocation: Placing trading servers in the same data center region as RPC providers and exchange matching engines to minimize latency. AWS US-East-1 is a common default for EVM operations.

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Educational only — not financial advice.