FluxRPC Engineering
Notes from the RPC stack.
Benchmarks, bottlenecks, and production fixes from the team running Solana RPC infrastructure at scale.
Also check out Under the Rug, RugCheck's engineering blog.
Updated October 8, 2026
Latest 6 min read
Yellowstone gRPC Reconnect Changes: What Solana Developers Need to Update
Yellowstone gRPC changed reconnect behavior in September 2026. Learn what changed, why standard subscribe streams no longer reconnect automatically, and what Solana developers need to update.
solanayellowstonegrpc
FluxRPC Team10 min read
Solana RPC Failover: Why Your Primary and Backup Need Different Failure Domains
A second Solana RPC provider is not enough if it can fail for the same reason as your primary. Learn how RPC failure domains work, what Teraswitch exposed, and why FluxRPC provides a different serving path.
solanarpcfailover
FluxRPC Team10 min read
Solana 250ms Slots Are Live: What Developers Need to Change
Solana's 250ms slot target is live on mainnet. A five-minute FluxRPC measurement on September 21, 2026 observed approximately 268ms per slot. Here is what changes for blockhash validity, transaction retries, RPC polling and slot-to-time calculations.
solanaslot-timessimd-0525
FluxRPC Team9 min read
Introducing fluxrpc/solana-go: the Solana Go SDK we needed
A lean, optimized and spec-complete Solana SDK for Go, built around performance and long-term API stability — with streaming getProgramAccounts, a complete Yellowstone client and an RPC cache that turns most account reads into local hits.
gosolana-gosdk
CloakdDevTechnical Founder at FluxRPC6 min read
How We Cut Base58 CPU Usage from 20% to 1–2% in Our Solana RPC Stack
Production profiling at FluxRPC showed that around 20% of total CPU time was spent on encoding or decoding. After applying our optimized codec, we saw the time spent drop to 1–2% at most.
base58performancerpc
CloakdDevTechnical Founder at FluxRPC