Besu Certified Professional case studies
Besu Certified Professional · Put your knowledge to work in context.
The Besu Certified Professional credential is aimed at engineers who run or build on Hyperledger Besu, the Apache-2.0 licensed Java Ethereum client maintained under the Hyperledger Foundation. It suits DevOps and platform engineers operating validator or RPC nodes in permissioned consortia, protocol engineers configuring private networks, and smart contract developers who need to reason about gas, tracing, and privacy-enabled deployments. The Besu Certified Professional case studies are 5 cases and about 4,649 words.
1Four-Validator IBFT 2.0 Network Stalls During a Parallel Patching Window
A consortium runs a four-validator IBFT 2.0 network for interbank settlement: chain ID 1337, blockperiodseconds 2, requesttimeoutseconds 4, validators v1–v4 on separate VMs in one region, peaking at about 40 transactions per second. During a scheduled OS patching window the platform team reboots v3 and v4 simultaneously to shorten the maintenance window, reasoning that two live validators still form a majority of the four-seat validator set.
946 words, about 5 min2New Observer Node Peers Successfully but Never Leaves Block Zero
A private QBFT network with chain ID 2024 runs four validators and has produced about 2.3 million blocks at a 2-second block period. A reporting team needs a read-only node and provisions one on a new VM.
950 words, about 5 min3Settlement dApp Suffers Reverts and Failed Historical Queries
A settlement dApp submits about 180,000 transactions per week through a load balancer in front of two Besu nodes. It calls eth estimateGas with the default latest block tag, multiplies the result by 1.0, signs, and sends.
993 words, about 5 min4Partner Node Onboarding Fails Despite a Correct Allowlist Entry
A five-node permissioned network uses onchain permissioning: an accounts allowlist contract and a nodes allowlist contract, with node permissioning enabled on every node. A partner team is onboarded with a read-only node, rpc-2 .
767 words, about 4 min5Rollback After a Validator Upgrade Leaves the Database Unopenable
A four-validator IBFT 2.0 consortium chain, blockperiodseconds 2, requesttimeoutseconds 4, is running an older Besu release. Validator v2 is upgraded to the newest release; the node starts, migrates its database, and syncs.
993 words, about 5 min