iBoost/Portfolio/FileDrop

Infrastructure·2026 — now

FileDrop

File sharing with nothing extra: drop a file, get a link. Anonymous uploads live a week, account uploads live as long as you like, and the on-disk path cannot be guessed.

Our role

Product, engineering, operations

Status

Running in production

Period

2026 — now

Platform

Web · SFTP

d.iboost.ua
FileDrop — interface

Live interface · captured from production

01

What it is

Once a week any team needs to move a file quickly: a mockup to the client, a dump to a colleague, a 200 MB video that will not go through a messenger. Public file hosts either demand registration, or show ads, or silently delete the file after a day. So we built our own for exactly that job.

The key detail is delivery. Blobs are never served by the application and never sit at a predictable path: nginx serves them through an internal redirect, so the on-disk address cannot be guessed and the application spends no resources shovelling bytes.

02

capabilities

What it does

01

Upload without registration

Drop and get a link. Up to 200 MB, alive for a week, then removed automatically.

02

Account for permanent storage

With an account, files stay indefinitely within quota, with name search and a personal list.

03

Unpredictable links

An optional random suffix in the filename and a short link at the root. One filename never reveals another.

04

Delivery via internal redirect

nginx serves the blob from an internal location — the disk path never leaks outward.

05

SFTP access

A dedicated jailed account; anything uploaded over SFTP is registered into the database with one command.

06

Scheduled cleanup

A systemd timer removes expired files. Disk does not fill up because nobody got around to it.

03

architecture

How it works

01

File upload

02

Database record and quota

03

Link issued

04

Served through nginx

05

TTL cleanup

Under the hood

  • A FastAPI application under its own system user, permitted to write only into the file directory.
  • SQLite as the registry of files, quotas and users.
  • It listens on localhost only; the outside world reaches it through nginx.
  • An operations CLI: init, create admin, reset password, cleanup, import an SFTP directory.
  • The legal minimum is in place: uploader responsibility, IP recording, and a report-this-file button.
  • One process, one database file, zero external dependencies — a service that does not break.
PythonFastAPISQLiteNginx · X-AccelSFTPsystemd timer

04

scale

Numbers

200 MB

anonymous upload limit

7 days

anonymous file TTL

retention with an account

0

external dependencies