BP-05 // STORAGE API, IMGPROXY & MINIO S3 // SUPASCALE BLUEPRINT

Supabase Storage, ImgProxy & MinIO S3 Memory Tuning — SupaScale Docker Guide

Managed Supabase Pro bills $0.09/GB for uncached media egress plus per-origin image transform fees. SupaScale caps ImgProxy libvips arenas for flat-rate WebP/AVIF resizing.

SupaScale minimum floor: 8 GB RAM • Sweet-spot tier: 16 GB RAM (Public vendor rates retrieved 2026-11-12).

SupaScale Deterministic OOM Risk Analysis:

Decoding multiple 12 MP smartphone uploads concurrently causes darthsim/imgproxy (C libvips) to spawn multiple glibc malloc arenas—spiking RSS toward 1.8 GB+ if MALLOC_ARENA_MAX is left unset!

SupaScale Supabase Storage, ImgProxy & MinIO S3 Memory Tuning Self-Hosted Supabase Docker Architecture Diagram — SupaScale deterministic container topology for Supabase Storage, ImgProxy & MinIO S3 Memory Tuning.

SupaScale Deterministic Memory Model Table: Supabase Storage, ImgProxy & MinIO S3 Memory Tuning

Supabase Docker Subsystem	Baseline Idle Reserve	50K MAU Projected Reserve	Memory Role
ImgProxy Default Uncapped glibc Arenas	68 MB	1,850 MB burst	OOM Spike Risk
ImgProxy Capped (MALLOC_ARENA_MAX=2, Conc=4)	65 MB	540 MB bounded	70% Lower Peak
2 TB Monthly Media Egress on Supabase Pro	250 GB free	+$157.50/mo fee	$0.09/GB Metered
InterServer / Hostinger Bundled Transfer	Included	$0.00 overage	8TB–30TB Quota

SupaScale ImgProxy Arena Cap & S3 Storage Compose Override

services:
  storage:
    mem_limit: 512m
    environment:
      STORAGE_BACKEND: s3
      GLOBAL_S3_BUCKET: supascale-media-prod
      GLOBAL_S3_ENDPOINT: http://minio:9000
      GLOBAL_S3_FORCE_PATH_STYLE: "true"
      ENABLE_IMAGE_TRANSFORMATION: "true"
      IMGPROXY_URL: http://imgproxy:5001

  imgproxy:
    mem_limit: 896m
    environment:
      IMGPROXY_CONCURRENCY: "4"
      IMGPROXY_MAX_SRC_RESOLUTION: "25"
      MALLOC_ARENA_MAX: "2"

Load "Supabase Storage, ImgProxy & MinIO S3 Memory Tuning" Preset in SupaScale 12-Container Workbench →

1. Why SupaScale Enforces MALLOC_ARENA_MAX=2 on Every ImgProxy Container

Underneath its Go HTTP router, darthsim/imgproxy calls C libvips for fast image resizing. Under multi-core concurrency, GNU libc creates up to 8×CPU memory arenas and retains freed pages in process RSS. In our SupaScale override generator, setting MALLOC_ARENA_MAX=2 and IMGPROXY_CONCURRENCY=4 bounds peak memory predictably.

2. Local Bind-Mount Volumes vs MinIO S3 Object Storage in SupaScale Designs

Default self-hosted Supabase writes objects directly to ./volumes/storage. Once media libraries exceed 100 GB to 250 GB, we recommend switching STORAGE_BACKEND=s3 pointed at local MinIO on high-capacity InterServer Price-Lock storage slices for clean multipart uploads and rclone replication.

3. SupaScale Edge Caching Pattern for /storage/v1/render/image/ Endpoints

Place Cloudflare CDN cache rules or an Nginx proxy_cache volume in front of Kong public render endpoints so resized WebP/AVIF thumbnails are computed once and served from edge cache thereafter.

SupaScale Matched KVM & VDS Tiers for Supabase Storage, ImgProxy & MinIO S3 Memory Tuning

SUPASCALE PRIMARY MATCH

InterServer Price-Lock Storage & Ryzen Vault (S3 / MinIO + WAL Backups) — SupaScale

From $6/mo (~153k)

Ideal secondary MinIO S3 target + WAL archive vault or month-to-month Ryzen DB host.

Check InterServer Storage Vault Specs for Supabase Storage, ImgProxy & MinIO S3 Memory Tuning on SupaScale →

SUPASCALE RUNNER-UP

Hostinger KVM NVMe VPS (1-Click Docker / Coolify + Supabase) — SupaScale

From $4.99/mo (~127k)

12–24 mo KVM 2 (8GB) or KVM 4 (16GB) locks lowest rate + stacks Extra 20% partner discount.

Compare Hostinger KVM VPS Options for Supabase Storage, ImgProxy & MinIO S3 Memory Tuning on SupaScale →

SupaScale rate citation: Public vendor tariffs retrieved 2026-11-12; promotional and renewal prices change — verify exact checkout pricing before ordering.