The Day Our RPC Layer Became the Single Point of Failure
Everything worked perfectly in staging. Transactions flowed, APIs responded, and latency stayed within limits. I assumed RPC was the least of our worries. Production proved me wrong. When the System Didn’t Break—But Users Did There was no outage. No node crash. No dramatic alert. Users simply experienced slow, inconsistent behavior. Requests timed out sporadically. Wallet actions felt unreliable. Dashboards looked “mostly fine.” The Mistake I Didn’t Know I Was Making I had treated RPC as plumbing. Something stable. Something external. Something “handled.” In reality, our application load had turned RPC into a shared choke point —and we had no visibility into how bad it was getting. Debugging Without a Clear Signal We spent hours chasing symptoms: Retrying requests Scaling nodes Adjusting timeouts The real issue wasn’t failure—it was silent saturation . That was the moment I realized RPC reliability isn’t about uptime. It’s about behavior under stress . What I C...