feat: per-origin HTTP concurrency limiter for COG layers#557

Merged

kylebarron merged 48 commits into

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kyle/getTileData-coalesce-v2

May 22, 2026

Commits on May 12, 2026

docs: spec for coalescing tile fetches through deck.gl getTileData

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Commits on May 19, 2026

docs(spec): per-origin concurrency limiter (gating only)

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feat(geotiff): Semaphore primitive with signal-aware acquire

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feat(geotiff): ConcurrencyLimiter interface + PerOriginSemaphore

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feat(geotiff): limitFetch helper

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feat(geotiff): export ConcurrencyLimiter type and PerOriginSemaphore class

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feat(geotiff): concurrencyLimiter option on GeoTIFF.fromUrl

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feat(deck.gl-geotiff): default PerOriginSemaphore + fetchGeoTIFF option

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feat(deck.gl-geotiff): COGLayer.concurrencyLimiter prop + default

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feat(deck.gl-geotiff): MultiCOGLayer.concurrencyLimiter prop + default

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docs(geotiff): docstrings on Semaphore internals (PR #557 review)

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refactor(geotiff): limitFetch → LimiterMiddleware class (PR #557 review)

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cleaner
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feat(geotiff): dynamic priority on ConcurrencyLimiter / Semaphore

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feat(geotiff): thread getPriority through GeoTIFF.fromUrl + fetchGeoTIFF

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feat(deck.gl-geotiff): MosaicLayer passes distance-from-viewport-center as getPriority

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feat(examples/naip-mosaic): thread getPriority through getCachedGeoTIFF

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fix(examples/naip-mosaic): actually install the limiter so priority can fire

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feat(deck.gl-geotiff): MosaicLayer concurrencyLimiter prop

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feat(geotiff): gate header fetches through the concurrency limiter

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refactor(examples/naip-mosaic): forward MosaicLayer opts straight to GeoTIFF.fromUrl

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docs(spec): cover dynamic priority + LimiterMiddleware + MosaicLayer

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Commits on May 20, 2026

Merge remote-tracking branch 'origin/main' into kyle/getTileData-coalesce-v2
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Commits on May 21, 2026

Commits on May 22, 2026