Release Notes - v0.75.1

v0.75.1

Title: Improve evaluation efficiency and operational resilience

Date: 2026-10-01

Version: v0.75.1

Release: v0.75.1

Dingo v0.75.1 brings more efficient shared Plutus evaluation, more resilient startup replay, current catch-up metrics, and fewer database write interruptions during concurrent reads.

Recommended Network Compatibility ⚠️

Network	Compatible
mainnet	⛔
preprod-testnet	✅
preview-testnet	✅
musashi	✅

Evaluation and startup improvements

• Improved shared Plutus evaluation by reusing pooled CEK machines across compatible evaluation contexts. ExUnits remain stable, and repeated evaluations use fewer allocations.

• Protected startup replay from unavailable networking state. Endorser block processing reports networking unavailability and retries until networking starts.

Monitoring and database improvements

• Updated tip gap and epoch length gauges as the node catches up from behind the available horizon. Readiness behavior remains unchanged, and operators receive current synchronization metrics.

• Reduced SQLite writer stalls during WAL checkpointing by using a nonblocking checkpoint connection, checking whether readers allow truncation, and retrying truncation later when needed. Concurrent reads no longer hold the writer indefinitely.

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Docs authored by Doc Holiday