S3-compatible object storage, without the egress bill

# configure once
aws configure set aws_access_key_id     BSK7Q2XW9RMLE4TZ
aws configure set aws_secret_access_key ****************

# upload with automatic multipart
aws --endpoint-url https://ru3.trixycon.com \
    s3 cp ./dataset.tar.zst s3://backups/2026/

# range read, 64 MiB window
aws --endpoint-url https://ru3.trixycon.com \
    s3api get-object --bucket backups --key 2026/dataset.tar.zst \
    --range bytes=0-67108863 part0.bin

# ~/.config/rclone/rclone.conf
[basalt]
type = s3
provider = Other
endpoint = https://ru3.trixycon.com
access_key_id = BSK7Q2XW9RMLE4TZ
secret_access_key = ****************
chunk_size = 64M
upload_concurrency = 8

# sync a 4 TB tree, 8 streams
rclone sync /srv/media basalt:media --transfers 8 --progress

import boto3

s3 = boto3.client(
    "s3",
    endpoint_url="https://ru3.trixycon.com",
    aws_access_key_id="BSK7Q2XW9RMLE4TZ",
    aws_secret_access_key="****************",
)

s3.upload_file(
    "dataset.tar.zst", "backups", "2026/dataset.tar.zst",
    Config=boto3.s3.transfer.TransferConfig(
        multipart_chunksize=64 * 1024 * 1024,
        max_concurrency=8,
    ),
)