initial

backendpanel/quota_usage.sql

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+-- Run this on your database to enable per-user/per-topic quota limiting for FCM and other APIs.
+CREATE TABLE IF NOT EXISTS quota_usage (
+  id INT AUTO_INCREMENT PRIMARY KEY,
+  key_name VARCHAR(255) NOT NULL,
+  period_type VARCHAR(16) NOT NULL,
+  period_value VARCHAR(32) NOT NULL,
+  count INT UNSIGNED NOT NULL DEFAULT 0,
+  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  UNIQUE KEY uk_key_period (key_name, period_type, period_value)
+);