Add redis example; update/add logos (#968)

* Add redis example; update/add logos

* Smaller tech logos

README.md

@@ -77,6 +77,16 @@ Flipt supports use cases such as:
 - :white_check_mark: **Simplicity** - Flipt is a single binary with no external dependencies by default.
 - :thumbsup: **Compatibility** - REST, GRPC, MySQL, Postgres, SQLite, Redis.. Flipt supports it all.
 
+## Works With
+
+<p align="center">
+    <img src="./logos/sqlite.svg" alt="SQLite" width=150 height=150 />
+    <img src="./logos/mysql.svg" alt="MySQL" width=150 height=150 />
+    <img src="./logos/postgresql.svg" alt="PostgreSQL" width=150 height=150 />
+    <img src="./logos/redis.svg" alt="Redis" width=150 height=150 />
+    <img src="./logos/prometheus.svg" alt="Prometheus" width=150 height=150 />
+</p>
+
 ## Try It
 
 Try the latest version of Flipt out for yourself.
@@ -99,6 +109,21 @@ Flipt UI will now be reachable at [http://127.0.0.1:8080/](http://127.0.0.1:8080
 
 For more permanent methods of running Flipt, see the [Installation](https://flipt.io/docs/installation/) section.
 
+## Logos
+
+Some of our users running Flipt in production.
+
+<p>
+    <a href="https://paradigm.co">
+        <img src="./logos/users/paradigm.png" alt="Paradigm" />
+    </a>
+    <a href="https://rokt.com">
+        <img src="logos/users/rokt.svg" alt="Rokt" width="200"/>
+    </a>
+</p>
+
+Using Flipt at your company? Open a PR and add your logo here!
+
 ## Integration
 
 Checkout the [integration docs](https://flipt.io/docs/integration/) for more info on how to integrate Flipt into your existing application.
@@ -160,18 +185,6 @@ The server code is licensed under the [GPL 3.0 License](https://spdx.org/license
 
 See [LICENSE](LICENSE).
 
-## Logos
-
-| [![Paradigm](logos/paradigm-logo-light-vertical-128x128.png)](https://www.paradigm.co/) |
-| ------------------------------------------------------------------------------------------|
-| [Paradigm](https://www.paradigm.co/)                                                      |
-
-| <img src="logos/rokt.svg" width="200"/>                                     |
-| ------------------------------------------------------------------------------------------|
-| [Rokt](https://www.rokt.com/)                                                             |
-
-Using Flipt at your company? Open a PR and add your logo here!
-
 ## Sponsors
 
 If you use Flipt at your company, please consider [becoming a sponsor](https://github.com/sponsors/markphelps) today.

examples/mysql/README.md

@@ -1,3 +1,7 @@
+<p align="center">
+    <img src="../../logos/mysql.svg" alt="MySQL" width=250 height=250 />
+</p>
+
 # MySQL Example
 
 This example shows how you can run Flipt with a MySQL database over the default SQLite.

examples/postgres/README.md

@@ -1,3 +1,7 @@
+<p align="center">
+    <img src="../../logos/postgresql.svg" alt="Postgres" width=250 height=250 />
+</p>
+
 # Postgres Example
 
 This example shows how you can run Flipt with a Postgres database over the default SQLite.

examples/prometheus/README.md

@@ -1,3 +1,7 @@
+<p align="center">
+    <img src="../../logos/prometheus.svg" alt="Prometheus" width=250 height=250 />
+</p>
+
 # Prometheus Example
 
 This example shows how you can run Flipt with a Prometheus sidecar application in Docker.

examples/redis/Dockerfile

@@ -0,0 +1,8 @@
+FROM flipt/flipt:latest
+
+USER root
+
+RUN apk update && apk add --no-cache git bash
+
+RUN git clone https://github.com/vishnubob/wait-for-it.git /tmp && \
+    chmod +x /tmp/wait-for-it.sh

examples/redis/README.md

@@ -0,0 +1,36 @@
+<p align="center">
+    <img src="../../logos/redis.svg" alt="Redis" width=250 height=250 />
+</p>
+
+# Redis Example
+
+This example shows how you can run Flipt with a Redis cache for caching flag and evaluation responses.
+
+This works by setting the following environment variables to configure Redis in the container:
+
+```bash
+FLIPT_CACHE_ENABLED=true
+FLIPT_CACHE_TTL=60s
+FLIPT_CACHE_BACKEND=redis
+FLIPT_CACHE_REDIS_HOST=redis
+FLIPT_CACHE_REDIS_PORT=6379
+```
+
+For more information on how to use Redis with Flipt, see the [Flipt caching documentation](https://flipt.io/docs/configuration#caching).
+
+## Requirements
+
+To run this example application you'll need:
+
+* [Docker](https://docs.docker.com/install/)
+* [docker-compose](https://docs.docker.com/compose/install/)
+
+## Running the Example
+
+1. Run `docker-compose up` from this directory
+1. Open the Flipt UI (default: [http://localhost:8080](http://localhost:8080))
+1. Check the logs to see that the Redis cache is enabled:
+
+    ```console
+    level=debug msg="cache: \"redis\" enabled" server=grpc
+    ```

examples/redis/docker-compose.yml

@@ -0,0 +1,27 @@
+version: "3"
+
+services:
+  redis:
+    image: redis:latest
+    networks:
+      - flipt_network
+
+  flipt:
+    build: .
+    depends_on:
+      - redis
+    ports:
+      - "8080:8080"
+    networks:
+      - flipt_network
+    environment:
+      - FLIPT_CACHE_ENABLED=true
+      - FLIPT_CACHE_TTL=60s
+      - FLIPT_CACHE_BACKEND=redis
+      - FLIPT_CACHE_REDIS_HOST=redis
+      - FLIPT_CACHE_REDIS_PORT=6379
+      - FLIPT_LOG_LEVEL=debug
+    command: ["./tmp/wait-for-it.sh", "redis:6379", "--", "./flipt"]
+
+networks:
+  flipt_network: