oddur

NemoPostgresAdapter: Persistence Efficiency Optimization

Problem Statement

The NemoPostgresAdapter persistence layer is exhibiting multiple inefficiency symptoms that indicate a fundamental batching problem. These issues were identified through:

• Performance benchmarking of the persistence layer under various load conditions
• PostgreSQL monitoring using pg_stat_statements (query performance statistics)
• Database activity analysis using pg_stat_activity (connection and transaction patterns)
• CPU profiling during idle and load scenarios

oddur

SimTime Service Multi-Instance Architecture Plan

Executive Summary

This document outlines a solution to enable the SimTime service to run safely across multiple instances, eliminating the current single point of failure while maintaining time consistency across the distributed system.

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ELI5: The Solution in Simple Terms

oddur

Final Dictionary Compression Recommendation

Optimal Dictionary Size: 128 KB ⭐

Test Results Summary

Based on benchmarking 118,449 real gRPC protobuf messages (median 173 bytes):

Dictionary Size	Compression Ratio	Bandwidth Saved	Performance