Blutgang - the wd40 of ethereum load balancers

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Blutgang is a blazing fast, caching, minimalistic load balancer designed with Ethereum's JSON-RPC in mind. Historical RPC queries are cached in a local database, bypassing the need for slow, repeating calls to your node.

For more info about blutgang and how to use it, please check out the wiki.

How to run

For detailed instructions on how to use blutgang, please read the wiki.

Using cargo

To install blutgang via cargo, run the following command:

cargo install blutgang

Once done, grab the example_config.toml from this repository, modify it to your liking, and start blutgang with it.

From source

Clone the repository, and find the example_config.toml file. Edit it to your liking, and run cargo run --release -- -c example_config.toml.

If you want to use command line arguments instead, please run cargo run --release -- --help for more info. Keep in mind that the recommended way to run blutgang is via a config file.

Max performance

If you need the absolute maximum performance from blutgang, compile it using the command below:

RUSTFLAGS='-C target-cpu=native' cargo build --profile maxperf

Docker

Note: The overhead of running blutgang inside of docker reduces cache read performance by 10-20%.

The official docker image is available on dockerhub.
You must provide a config file to the docker container, as well as expose the port specified. Example:

docker run -v /full/path/to/config.toml:/app/config.toml --network host makemake1337/blutgang

Benchmarks

Benchmarks were performed with a Ryzen 7 2700X, NVME SSD, and default Ubuntu 23.04 kernel. Same RPC endpoints were used

time sothis --source_rpc http://localhost:3000 --mode call_track --contract_address 0x1c479675ad559DC151F6Ec7ed3FbF8ceE79582B6 --origin_block 17885300 --terminal_block 17892269 --calldata 0x06f13056 --query_interval 20

Notes on the license

Blutgang is libre software licensed under the AGPL-3.0 license. If you are using blutgang in a commercial enviroment, and do not get a commercial license from us, you are required by law to disclose the source code of blutgang, or any works based on or that use the licensed software in any way. This includes MEV bots. Blutgang respects the freedom of it's users and will always be free for non-commercial use.

Commercial use and support

If you want to use blutgang in a commercial setting without disclosing any source code, please reach out.