15 posts.
A naive retry loop turns a brief blip into an outage. Here's how to retry RPC calls correctly: exponential backoff with jitter, knowing which calls are safe to retry, and failing over across providers — with copy-paste examples in viem, ethers, and web3.py.
Read →Mantle looks like a standard EVM L2 until two things trip you up: gas is paid in MNT, not ETH, and data availability runs through EigenDA instead of Ethereum calldata. Here's what that means for your RPC calls, plus the Mantle endpoints to point at.
Read →On an Ethereum L2, a single component decides the order your transaction lands in and how fast it confirms: the sequencer. Here's what it actually does, why nearly every rollup runs a centralized one today, and what that means when you're reading L2 state over RPC.
Read →Polling eth_getLogs in a loop is the slow, brittle way to watch contract events. eth_subscribe pushes logs to you over WebSocket the instant they're mined. Here's how to build a subscription that filters correctly, survives reconnects, and never silently misses an event.
Read →Solana's high block rate makes RPC rate limiting a constant production concern — 429s show up under load and break bots, indexers, and frontends. Here's why they happen, how to handle them with backoff and batching, and how to size your endpoint so they stop happening at all.
Read →dRPC and Alchemy take opposite paths to the same metered-compute billing model — one decentralized and pay-as-you-go, one a polished managed platform. Here's how they actually differ, where each wins, and why the deciding question is whether your workload fits compute-unit pricing at all.
Read →Zora is an OP Stack L2 built for mints, and minting traffic is bursty in a way that punishes public RPC endpoints. Here's what you need to build on Zora in 2026 — chain ID 7777777, Superchain finality, the public-node trap, and the query patterns for reading mints at scale.
Read →A WebSocket subscription that silently drops is worse than no subscription at all — you keep running, but events vanish into the gap. Here's how to build reconnect logic that detects the drop, backs off, re-subscribes, and backfills the missed events so your indexer never loses a log.
Read →BNB Smart Chain is one of the busiest EVM chains on the planet, but its public RPC endpoints fold under any real load. Here's what you need to connect reliably in 2026 — chain ID, finality, the public-node trap, and the query patterns that matter at BSC's transaction volume.
Read →Every RPC provider limits you, but they don't agree on what a limit even is. One caps requests per second, another meters compute units, a third deducts API credits. Here's how the three models work, why the same workload costs differently on each, and how to estimate your own number.
Read →They share a name and a parent company, but Polygon PoS and Polygon zkEVM are two separate chains — different chain IDs, different gas tokens, different security models, and very different liquidity. Here's how to tell which RPC endpoint your app actually needs.
Read →Every blockchain tutorial says 'connect to an RPC endpoint' and then moves on. Here's what one actually is, what the URL means, how a request works, and when you need a provider — in five minutes.
Read →QuickNode methods cost up to 50× each other in credits, marketplace add-ons stack on top, and overage bills arrive without warning. Worked examples: what a wallet UI, a DEX, and an indexer really pay per month — and how to forecast your bill before it surprises you.
Read →Eight serious providers offer Base RPC in 2026. Here's the honest comparison — pricing, free tiers, WebSocket support, archive access, and which one to pick for which workload.
Read →Different RPC methods cost up to 30× each other in Compute Units, so the same user traffic can cost $400 or $1,700 depending on which methods your code calls. Real worked examples, the methods that burn CUs fastest, and how to make an Alchemy bill predictable.
Read →