Add plantuml diagram and rewrite README parts, add Credits part (#9)

* Add puml diagram to md

* Some tests

* Remove md and switch to puml to svg generator

* Improve doc

* Update README and plantUML schema

Makefile

@@ -28,6 +28,9 @@ env-prod: ## Up container with prod env vars
 	cp docker-compose.yml.prod docker-compose.yml
 	cp .env.prod .env
 
+generate-plantUML: ## Generate plantUML diagrams
+	cd ./docs/plantUML && sh generate.sh && cd ../..
+
 help:
 	@grep -E '(^[0-9a-zA-Z_-]+:.*?##.*$$)|(^##)' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[32m%-25s\033[0m %s\n", $$1, $$2}' | sed -e 's/\[32m##/[33m/'
 

README.md

@@ -5,24 +5,26 @@
 2. [Environment variables](#environment-variables)  
   2.1. [Required variables](#required-variables)  
   2.2. [Optional variables](#optional-variables)
-3. [Cache system](#cache-system)
-4. [Exemples](#exemples)  
-  4.1. [Træfik container](#træfik-container)
-5. [SSL](#ssl)  
-  5.1. [Træfik](#træfik)
+3. [Diagrams](#diagrams)  
+  3.1. [Sequence diagram](#sequence-diagram)
+4. [Cache systems](#cache-systems)
+5. [Examples](#examples)  
+  5.1. [Træfik container](#træfik-container)
+6. [SSL](#ssl)  
+  6.1. [Træfik](#træfik)
 
 [![Travis CI](https://travis-ci.com/Darkweak/Souin.svg?branch=master)](https://travis-ci.com/Darkweak/Souin)
 
 # <img src="docs/img/logo.svg?sanitize=true" alt="Souin logo" width="30" height="30">ouin reverse-proxy cache
 
 ## Project description
-Souin is a new cache system any every reverse-proxy. It will be placed on top of your current reverse-proxy whether it's Apache, nginx or Traefik.  
-Since it's written in go, it can be deployed on any server and thantks docker integration, it will be easy to install it on top of a Swarm or a kubernetes instance.
+Souin is a new cache system suitable for every reverse-proxy. It will be placed on top of your current reverse-proxy whether it's Apache, Nginx or Traefik.  
+As it's written in go, it can be deployed on any server and thanks docker integration, it will be easy to install it on top of a Swarm or a kubernetes instance.
 
 ## Environment variables
 
 ### Required variables
-|  Variable  |  Description  |  Value exemple  |
+|  Variable  |  Description  |  Value example  |
 |:---:|:---:|:---:|
 |`CACHE_PORT`|The HTTP port Souin will be listening on |`80`|
 |`CACHE_TLS_PORT`|The TLS port Souin will be listening on|`443`|
@@ -31,21 +33,26 @@ Since it's written in go, it can be deployed on any server and thantks docker in
 |`REVERSE_PROXY`|The reverse-proxy's instance URL (Apache, Nginx, Træfik...)|- `http://yourservice` (Container way)<br/>`http://localhost:81` (Local way)|
 
 ### Optional variables
-|  Variable  |  Description  |  Value exemple  |
+|  Variable  |  Description  |  Value example  |
 |:---:|:---:|:---:|
 |`REGEX`|The regex that matches URLs not to store in cache|`http://domain.com/mypath`|
 
-## Cache system
-The cache sits into a Redis instance, because setting, getting, updating and deleting keys in Redis is as easy as it gets.  
-In order to do that, Redis should be on the same network than the Souin instance when using docker-compose. When yousing binaries, then both should be on the same server.
-Souin will return the redis instance when it gives a valid answer, or fallback to the reverse proxy otherwise.
+## Diagrams
+
+### Sequence diagram
+<img src="docs/plantUML/sequenceDiagram.svg?sanitize=true" alt="Sequence diagram">
+
+## Cache systems
+The cache system sits on two providers at the moment. It provides an in-memory and redis cache systems because setting, getting, updating and deleting keys in Redis is as easy as it gets.  
+In order to do that, Redis could be on the same network than the Souin instance when using docker-compose or over the internet then it will use by default in-memory to avoid network latency as much as possible. 
+Souin will return at first the in-memory response when it gives a non-empty response, then the redis one will be used with same condition, or fallback to the reverse proxy otherwise.
 
 ### Cache invalidation
 The cache invalidation is made for CRUD requests, if you're doing a GET HTTP request, it will serve the cached response when it exists, otherwise the reverse-proxy response will be served.  
 If you're doing a POST, PUT, PATCH or DELETE HTTP request, the related cache GET request will be dropped and the list endpoint will be dropped too  
 It works very well with plain [API Platform](https://api-platform.com) integration (not for custom actions for now) and CRUD routes.
 
-## Exemples
+## Examples
 
 ### Træfik container
 [Træfik](https://traefik.io) is a modern reverse-proxy and help you to manage full container architecture projects.
@@ -67,6 +74,7 @@ services:
     command: --providers.docker
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
+      - /anywhere/traefik.json:/acme.json
     <<: *networks
 
   # your other services here...
@@ -103,7 +111,7 @@ services:
       GOPATH: /app
     volumes:
       - ./cmd:/app/cmd
-      - ./acme.json:/app/src/github.com/darkweak/souin/acme.json
+      - /anywhere/traefik.json:/ssl/traefik.json
     <<: *networks
 
   redis:
@@ -125,16 +133,25 @@ To provide, acme, use just have to map volume as above
       - /anywhere/traefik.json:/ssl/traefik.json
 ```
 ### Apache
-Souin will listen `apache.json` file. You have to setup your own way to agregate your SSL cert files and keys. Alternatively you can use a side project called [dob](https://github.com/darkweak/dob), it's open-source and written in go too
+Souin will listen `apache.json` file. You have to setup your own way to aggregate your SSL cert files and keys. Alternatively you can use a side project called [dob](https://github.com/darkweak/dob), it's open-source and written in go too
 ```yaml
     volumes:
       - /anywhere/apache.json:/ssl/apache.json
 ```
 ### Nginx
-Souin will listen `nginx.json` file. You have to setup your own way to agregate your SSL cert files and keys. Alternatively you can use a side project called [dob](https://github.com/darkweak/dob), it's open-source and written in go too
+Souin will listen `nginx.json` file. You have to setup your own way to aggregate your SSL cert files and keys. Alternatively you can use a side project called [dob](https://github.com/darkweak/dob), it's open-source and written in go too
 ```yaml
     volumes:
       - /anywhere/nginx.json:/ssl/nginx.json
 ```
 At the moment you can't choose the path for the `*.json` in the container, they have to be placed in the `/ssl` folder. In the future you'll be able to do that just setting one env var
 If none `*.json` is provided to container, a default cert will be served.
+
+
+## Credits
+
+Thanks to these users for contributing or helping this project in any way  
+* [oxodao](https://github.com/oxodao)
+* [Deuchnord](https://github.com/deuchnord)
+* [Sata51](https://github.com/sata51)
+* [Pierre Diancourt](https://github.com/pierrediancourt)

docs/plantUML/generate.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+for FILE in *.puml; do
+  cat $FILE | docker run --rm -i think/plantuml > "${FILE%.puml}.svg"
+done
+echo Done

docs/plantUML/sequenceDiagram.puml

@@ -0,0 +1,42 @@
+@startuml
+actor User
+actor System
+activate System
+participant Souin
+collections Providers
+participant Memory
+participant Redis
+participant ReverseProxy
+System -> ReverseProxy ++ : run()
+System -> Souin ++ : main()
+Souin -> Providers : Init()
+activate Providers
+Providers -> Memory ++ : MemoryConnectionFactory()
+Providers <-- Memory : *AbstractProvider
+Providers -> Redis ++ : RedisConnectionFactory()
+Providers <-- Redis : *AbstractProvider
+Souin <-- Providers : AbstractProvider[]
+... Waiting for user request ...
+loop User requests
+  User -> Souin : request
+  activate User
+  par Request providers content
+    Souin -> Memory: GetRequestInCache()
+  else
+    Souin -> Redis: GetRequestInCache()
+  else
+    Souin -> ReverseProxy: GetRequestInReverseProxy()
+  end
+  par Response providers content
+    Souin <-- Memory: *Response
+  else
+    Souin <-- Redis: *Response
+  else
+    Souin <-- ReverseProxy: *Response
+    Souin -> Memory: SetRequestInCache()
+    Souin -> Redis: SetRequestInCache()
+  end
+Souin -> User : response
+deactivate User
+end
+@enduml