Whenever you need to share a code snippet, diff, logs, or a secret with another human being, the Pastebin service is invaluable. However, using public services such as pastebin.com, privnote.com, etc. should be avoided when you're sharing data that should be available only for a selected audience (i.e., your company, private network). Instead of trusting external providers, you could host your own Pastebin service and take ownership of all your data!
**There are numerous [Pastebin implementations](https://github.com/awesome-selfhosted/awesome-selfhosted#pastebins) out there, why would you implement another one?**
This is a rust version of Pastebin service with [rocksdb](https://rocksdb.org/) database as storage. In addition to previously mentioned features it's worth to mention:
* all-in-one binary - all the data, including css/javascript files are compiled into the binary. This way you don't need to worry about external dependencies, it's all witin. (see: [std::include_bytes](https://doc.rust-lang.org/std/macro.include_bytes.html))
* [REST endpoint](https://rocket.rs/) - you can add/delete pastes via standard HTTP client (ie. curl)
* [RocksDB compaction filter](https://github.com/facebook/rocksdb/wiki/Compaction-Filter) - the expired pastes will be automatically removed by custom compaction filter
* [flatbuffers](https://google.github.io/flatbuffers/) - data is serialized with flatbuffers (access to serialized data without parsing/unpacking)
* GUI - the UI is a plain HTML with [Bootstrap JS](https://getbootstrap.com/), [jQuery](https://jquery.com/) and [prism.js](https://prismjs.com/)
* Encryption - password-protected pastes are AES encrypted/decprypted in the browser via [CryptoJS](https://code.google.com/archive/p/crypto-js/)
Pastebin builds only with `rust-nightly` version and requires `llvm` compiler to be present (rocksdb deps). To skip the build process, you can use the docker image.
docker run mkaczanowski/pastebin --address localhost --port 8000
```
### Client
```
alias pastebin="curl -q -L -d @- -o - http://localhost:8000/"
echo "hello World" | pastebin
http://localhost:8000/T9kGrI5aNkI4Z-PelmQ5U
```
## Nginx (optional)
The Pastebin service serves `/static` files from memory. To lower down the load on the service you might want to consider setting up nginx with caching and compression enabled, as shown here:
At first glance, the performance is pretty good. In the simplest scenario (5 concurrent clients), we can get up to `1000 rps` with the p95 response time at `6.59 ms` (`14986` total requests made).
As we add more concurrent clients, the rps drops a bit (`794 rps`) but still provides a good timing (p95 `38.67ms`) with high throughput at `47699` request made in 15s window (3x compared to Test 1).
The CPU utilization is at 100% on every core available. The memory usage is stable at `~13 Mb RSS`.
