Better redis structure in readme

README.md

@@ -2,16 +2,39 @@
 
 ## Redis format
 
-The key `BOT_PREFIX::GUILD_ID::CHANNEL_ID::CONF` points to a hashmap of possible configuration parameters.
+The following strings are variables to be replaced in the redis keys:
+
+- `BOT_PREFIX`: A prefix for the bot as to not confuse entries with other applications using the redis instance
+- `GUILD_ID`: An ID of a discord guild. As time of writing, this is a 64 bit unsigned int
+- `CHANNEL_ID`: An ID of a discord channel. As time of writing, this is a 64 bit unsigned int
+- `MESSAGE_ID`: An ID of a discord message. As time of writing, this is a 64 bit unsigned int
+
+### `BOT_PREFIX::CONF::GUILD_ID::CHANNEL_ID`
+Points to a hashmap of possible configuration parameters.
 Current config parameters are:
-- tags (string):
-    the search query with each tag separated by spaces
-- timeout (int):
-    if random_timeout is `false`, amount of minutes to wait till the next post.
-    if random_timeout is `true`, the maximum amount of minutes a timeout is choosen from.
-- random_timeout (bool):
-    if a random timeout should be used
-- nsfw (string):
-    decides if queries are done against e621 or e926.
-    if "sfw" e926.net is used.
-    if "nsfw" e621.net is used.
+- tags (`string`):
+    - the search query with each tag separated by spaces
+- timeout (`int`):
+    - if random_timeout is `false`, amount of minutes to wait till the next post
+    - if random_timeout is `true`, the maximum amount of minutes a timeout is choosen from
+- random_timeout (`bool`):
+    - if a random timeout should be used
+- nsfw (`string`):
+    - decides if queries are done against e621.net or e926.net
+    - if `sfw`, then e926.net is used
+    - if `nsfw`, then e621.net is used
+- repost_cache_timeout (`int`):
+    - amount of minutes that an entry is kept in cache
+
+### `BOT_PREFIX::POSTS::GUILD_ID::CHANNEL_ID::MESSAGE_ID`
+A hashmap:
+- post_id (`int`):
+    - the e621/e926 post id
+- downvotes (`int`):
+    - number of times a user has clicked the downvote button (on discord, not the actual post)
+- upvotes (`int`):
+    - inverse to downvotes
+- delete_threshold (`int`):
+    - downvotes needed for the post to be deleted
+A sorted hashmap with the key being a post ID and the value the timestamp it was posted at.
+- These ID's will be evicted after `repost_cache_timeout` minutes of time have passed.