Update readme

Author: Folyd

README.md

@@ -5,7 +5,7 @@
 [![license-mit](https://img.shields.io/badge/license-MIT-yellow.svg)](./LICENSE)
 [![dependency status](https://deps.rs/repo/github/duo-rs/duo/status.svg)](https://deps.rs/repo/github/duo-rs/duo)
 
-**Observability duo: Logging and Tracing.**
+**A lightweight Logging and Tracing observability solution for Rust, built with [Apache Arrow](https://arrow.apache.org), [Apache Parquet](https://parquet.apache.org) and [Apache DataFusion](https://datafusion.apache.org).**
 
 > **Notice: this project is in the experimental stage and not production-ready. Use at your own risk.**
 
@@ -17,19 +17,9 @@ This project was inspired by [tracing](https://github.com/tokio-rs/tracing) and
 
 - **duo-api** - a wire protocol for logging and tracing data. The wire format is defined using gRPC and protocol buffers.
 - **duo-subscriber** - instrumentation for collecting logging and tracing data from a process and exposing it over the wire format. `duo-subscriber` crate in this repository contains an implementation of the instrumentation-side API as a [tracing-subscriber](https://crates.io/crates/tracing-subscriber) [Layer](https://docs.rs/tracing-subscriber/latest/tracing_subscriber/layer/trait.Layer.html), for projects using Tokio and tracing.
-- **duo-ui** - the web UI for duo. Currently, we just use the [jaeger-ui](https://github.com/jaegertracing/jaeger-ui) for tracing and have no UI for logging. The future repository is here: [duo-rs/duo-ui](https://github.com/duo-rs/duo-ui).
+- **duo-ui** - the web UI for duo.
 - **duo-server** - the aggregating server to collect tracing and logging data and interact with duo web UI.
 
-## Why called duo?
-
-Duo is mainly a musical terminology meaning a musical composition for two performers in which the performers have equal importance to the piece, often a composition involving two singers or two pianists.
-
-The famous duo band is [Brooklyn Duo](https://www.youtube.com/c/BrooklynDuo), you can visit this video ([Canon in D (Pachelbel's Canon) - Cello & Piano](https://www.youtube.com/watch?v=Ptk_1Dc2iPY)) to learn more about them.
-
-![](https://i.ytimg.com/vi/Ptk_1Dc2iPY/maxresdefault.jpg)
-
-I personally think the logging and tracing have equal importance to observability, they are just like a duo band to help you diagnose your application.
-
 ## Get started
 
 ### Installation
@@ -78,7 +68,15 @@ async fn main() {
 
 Run your application then check the http://127.0.0.1:3000 to see the tracing data.
 
-![](./duo-ui.png)
+### Logging UI
+
+![](./duo-ui-logging.png)
+
+### Tracing UI
+
+Currently trace view is based on [Jaeger UI](https://www.jaegertracing.io), we'll rewrite it with Svelte in the future.
+
+![](./duo-ui-tracing.png)
 
 ## Roadmap
 
@@ -98,6 +96,16 @@ Run your application then check the http://127.0.0.1:3000 to see the tracing dat
 
 - [ ] Support OpenTelemetry specification, aimed to be a lightweight OpenTelemetry backend.
 
+## Why called duo?
+
+Duo is mainly a musical terminology meaning a musical composition for two performers in which the performers have equal importance to the piece, often a composition involving two singers or two pianists.
+
+The famous duo band is [Brooklyn Duo](https://www.youtube.com/c/BrooklynDuo), you can visit this video ([Canon in D (Pachelbel's Canon) - Cello & Piano](https://www.youtube.com/watch?v=Ptk_1Dc2iPY)) to learn more about them.
+
+![](https://i.ytimg.com/vi/Ptk_1Dc2iPY/maxresdefault.jpg)
+
+I personally think the logging and tracing have equal importance to observability, they are just like a duo band to help you diagnose your application.
+
 ## License
 
 This project is licensed under the [MIT license](./LICENSE).