Initial Database Schema

sql/schema/001_create_url_table.sql

@@ -0,0 +1,16 @@
+-- +goose Up
+CREATE TABLE urls (
+    url_id SERIAL PRIMARY KEY,
+    long_url TEXT NOT NULL,
+    short_code VARCHAR(10) UNIQUE NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    expires_at TIMESTAMP WITH TIME ZONE,
+    is_active BOOLEAN DEFAULT TRUE NOT NULL
+);
+
+-- Crucial index for lightning-fast lookups when redirecting
+CREATE INDEX idx_urls_short_code ON urls(short_code);
+
+-- +goose Down
+DROP INDEX idx_urls_short_code;
+DROP TABLE urls;

sql/schema/002_create_click_logs_table.sql

@@ -0,0 +1,16 @@
+-- +goose Up
+CREATE TABLE click_logs (
+    click_id BIGSERIAL PRIMARY KEY,
+    url_id INT NOT NULL REFERENCES urls(url_id) ON DELETE CASCADE,
+    clicked_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    referrer VARCHAR(255),
+    user_agent TEXT,
+    ip_address VARCHAR(45) -- Accommodates both IPv4 and IPv6
+);
+
+-- Index to optimize analytics queries for a specific link
+CREATE INDEX idx_click_logs_url_id ON click_logs(url_id);
+
+-- +goose Down
+DROP INDEX idx_click_logs_url_id;
+DROP TABLE click_logs;