Programming language: Go
License: MIT License
Tags: Pastebins    

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Pasty is a fast and lightweight code pasting server


As pasty is an open source project on GitHub you can open an issue whenever you encounter a problem or feature request. However, it may be annoying to open an issue just to ask a simple question about pastys functionalities, get help with the the installation process or mention something about the hosted version. This is why I created a simple Discord server you may want to join to get an answer to stuff like that pretty quickly.


The pasty web frontend comes with some service-related links in it (Discord server). Of course you are allowed to remove these references. However, a small reference to pasty would be nice .


You may set up pasty in multiple different ways. However, I won't cover all of them as I want to keep this documentation as clean as possible.

1.) Building from source

To build pasty from source make sure you have Go installed.

  1. Clone the repository:

    git clone https://github.com/lus/pasty
  2. Switch directory:

    cd pasty/
  3. Run go build:

    go build -o pasty ./cmd/pasty/main.go

To configure pasty, simply create a .env file in the same directory as the binary is placed in.

To run pasty, simply execute the binary.

2.) Docker (recommended)

To run pasty with Docker, you should have basic understanding of it.

An example docker run command may look like this:

docker run -d \
    -p 8080:8080 \
    --name pasty \
    -e PASTY_AUTODELETE="true" \

Pasty will be available at http://localhost:8080.

General environment variables

Environment Variable Default Value Type Description
PASTY_WEB_ADDRESS :8080 string Defines the address the web server listens to
PASTY_STORAGE_TYPE file string Defines the storage type the pastes are saved to
PASTY_HASTEBIN_SUPPORT false bool Defines whether or not the POST /documents endpoint should be enabled, as known from the hastebin servers
PASTY_ID_LENGTH 6 number Defines the length of the ID of a paste
PASTY_DELETION_TOKENS true bool Defines whether or not deletion tokens should be generated
PASTY_DELETION_TOKEN_MASTER <empty> string Defines the master deletion token which is authorized to delete every paste (even if deletion tokens are disabled)
PASTY_DELETION_TOKEN_LENGTH 12 number Defines the length of the deletion token of a paste
PASTY_RATE_LIMIT 30-M string Defines the rate limit of the API (see https://github.com/ulule/limiter#usage)
PASTY_LENGTH_CAP 50000 number Defines the maximum amount of characters a paste is allowed to contain (a value <= 0 means no limit)


Pasty provides an intuitive system to automatically delete pastes after a specific amount of time. You can configure it with the following variables: | Environment Variable | Default Value | Type | Description | |----------------------------------|---------------|----------|--------------------------------------------------------------------------------| | PASTY_AUTODELETE | false | bool | Defines whether or not the AutoDelete system should be enabled | | PASTY_AUTODELETE_LIFETIME | 720h | string | Defines the duration a paste should live until it gets deleted | | PASTY_AUTODELETE_TASK_INTERVAL | 5m | string | Defines the interval in which the AutoDelete task should clean up the database |

Storage types

Pasty supports multiple storage types, defined using the PASTY_STORAGE_TYPE environment variable (use the value behind the corresponding title in this README). Every single one of them has its own configuration variables:

File (file)

Environment Variable Default Value Type Description
PASTY_STORAGE_FILE_PATH ./data string Defines the file path the paste files are being saved to

PostgreSQL (postgres)

Environment Variable Default Value Type Description
PASTY_STORAGE_POSTGRES_DSN postgres://pasty:[email protected]/pasty string Defines the PostgreSQL connection string (you might have to add ?sslmode=disable)

MongoDB (mongodb)

Environment Variable Default Value Type Description
PASTY_STORAGE_MONGODB_CONNECTION_STRING mongodb://pasty:[email protected]/pasty string Defines the connection string to use for the MongoDB connection
PASTY_STORAGE_MONGODB_DATABASE pasty string Defines the name of the database to use
PASTY_STORAGE_MONGODB_COLLECTION pastes string Defines the name of the collection to use

S3 (s3)

Environment Variable Default Value Type Description
PASTY_STORAGE_S3_ENDPOINT <empty> string Defines the S3 endpoint to connect to
PASTY_STORAGE_S3_ACCESS_KEY_ID <empty> string Defines the access key ID to use for the S3 storage
PASTY_STORAGE_S3_SECRET_ACCESS_KEY <empty> string Defines the secret acces key to use for the S3 storage
PASTY_STORAGE_S3_SECRET_TOKEN <empty> string Defines the session token to use for the S3 storage (may be left empty in the most cases)
PASTY_STORAGE_S3_SECURE true bool Defines whether or not SSL should be used for the S3 connection
PASTY_STORAGE_S3_REGION <empty> string Defines the region of the S3 storage
PASTY_STORAGE_S3_BUCKET pasty string Defines the name of the S3 bucket (has to be created before setup)