Concise monthly summary for 2026-04: Key features delivered include global and per-source cache zoom configuration to bypass caching for requests outside the specified zoom range, significantly reducing cache pollution for rarely accessed high-zoom tiles and improving overall tile-serving performance. This was achieved by adding configurable options at both global and per-source levels and introducing simple, safe hot-path checks. Major configurations added: - Global defaults: default_cache_minzoom, default_cache_maxzoom - Per-source overrides: cache_minzoom, cache_maxzoom (e.g., per Postgre source/table) Technical implementation highlights: - get_tile_content hot path enhanced with two is_none() checks to respect new zoom-based cache rules - YAML/config examples added to demonstrate global vs per-source settings - Changes linked to issue maplibre/martin#1137; commits include cb5a563fa2034be9a0efe56f35ac35eadc786393; co-authored contributions included Impact and accomplishments: - Performance improvement through targeted caching, reducing cache storage and load for high-zoom tiles - Greater configurability for operators and data sources, enabling fine-grained cache control - Process supports easier tuning and experimentation for caching strategies with minimal code changes Technologies/skills demonstrated: - Caching strategy design and hot-path optimization - YAML/configuration design and documentation - Collaborative development and version control practices (co-authored commits) - Issue-driven development aligned with project goals (reference #1137)