feat(database): ✨ add first version of the feeds table

docker_dev/mysql_schema.sql

@@ -55,6 +55,34 @@ CREATE TABLE dev_post_markdown (
 	FULLTEXT(post_markdown)
 );
 
+CREATE TABLE dev_feeds (
+	post_id 	INTEGER NOT NULL,
+	feed_key	VARCHAR(32),
+	feed_id	 	VARCHAR(40) NOT NULL,
+
+	feed_created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+	feed_metadata	JSON DEFAULT NULL,
+
+	feed_text		TEXT,
+
+-- Primary key as true ID to allow for deterministic saving/recreating
+	CONSTRAINT PK_FEED PRIMARY KEY(post_id, feed_key, feed_id),
+	FOREIGN KEY(post_id) REFERENCES dev_posts(post_id)
+		ON DELETE CASCADE,
+
+-- Make it possible to look up changes from e.g. a commit hash inexpensively
+	INDEX(feed_id),
+-- Make it possible to look up specific post feeds efficiently (e.g. changelog)
+	INDEX(post_id, feed_key, feed_created_at),
+-- Make it possible to globally look up specific feeds efficiently
+	INDEX(feed_key, feed_created_at),
+-- And just in general, make searching feeds in a timeframe efficient
+	INDEX(feed_created_at),
+
+	FULLTEXT(feed_text)
+);
+
 CREATE TABLE analytics_summations (
 	time_bucket DATETIME NOT NULL,
 	metric VARCHAR(16) NOT NULL,