90 lines
3.0 KiB
SQL
90 lines
3.0 KiB
SQL
-- C Nostr Relay Database Schema
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-- SQLite schema for storing Nostr events with JSON tags support
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-- Schema version tracking
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PRAGMA user_version = 2;
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-- Enable foreign key support
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PRAGMA foreign_keys = ON;
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-- Optimize for performance
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PRAGMA journal_mode = WAL;
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PRAGMA synchronous = NORMAL;
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PRAGMA cache_size = 10000;
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-- Core events table with hybrid single-table design
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CREATE TABLE events (
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id TEXT PRIMARY KEY, -- Nostr event ID (hex string)
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pubkey TEXT NOT NULL, -- Public key of event author (hex string)
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created_at INTEGER NOT NULL, -- Event creation timestamp (Unix timestamp)
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kind INTEGER NOT NULL, -- Event kind (0-65535)
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event_type TEXT NOT NULL CHECK (event_type IN ('regular', 'replaceable', 'ephemeral', 'addressable')),
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content TEXT NOT NULL, -- Event content (text content only)
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sig TEXT NOT NULL, -- Event signature (hex string)
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tags JSON NOT NULL DEFAULT '[]', -- Event tags as JSON array
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first_seen INTEGER NOT NULL DEFAULT (strftime('%s', 'now')) -- When relay received event
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);
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-- Core performance indexes
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CREATE INDEX idx_events_pubkey ON events(pubkey);
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CREATE INDEX idx_events_kind ON events(kind);
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CREATE INDEX idx_events_created_at ON events(created_at DESC);
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CREATE INDEX idx_events_event_type ON events(event_type);
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-- Composite indexes for common query patterns
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CREATE INDEX idx_events_kind_created_at ON events(kind, created_at DESC);
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CREATE INDEX idx_events_pubkey_created_at ON events(pubkey, created_at DESC);
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CREATE INDEX idx_events_pubkey_kind ON events(pubkey, kind);
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-- Schema information table
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CREATE TABLE schema_info (
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key TEXT PRIMARY KEY,
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value TEXT NOT NULL,
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updated_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now'))
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);
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-- Insert schema metadata
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INSERT INTO schema_info (key, value) VALUES
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('version', '2'),
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('description', 'Hybrid single-table Nostr relay schema with JSON tags'),
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('created_at', strftime('%s', 'now'));
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-- Helper views for common queries
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CREATE VIEW recent_events AS
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SELECT id, pubkey, created_at, kind, event_type, content
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FROM events
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WHERE event_type != 'ephemeral'
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ORDER BY created_at DESC
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LIMIT 1000;
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CREATE VIEW event_stats AS
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SELECT
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event_type,
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COUNT(*) as count,
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AVG(length(content)) as avg_content_length,
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MIN(created_at) as earliest,
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MAX(created_at) as latest
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FROM events
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GROUP BY event_type;
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-- Optimization: Trigger for automatic cleanup of ephemeral events older than 1 hour
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CREATE TRIGGER cleanup_ephemeral_events
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AFTER INSERT ON events
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WHEN NEW.event_type = 'ephemeral'
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BEGIN
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DELETE FROM events
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WHERE event_type = 'ephemeral'
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AND first_seen < (strftime('%s', 'now') - 3600);
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END;
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-- Replaceable event handling trigger
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CREATE TRIGGER handle_replaceable_events
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AFTER INSERT ON events
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WHEN NEW.event_type = 'replaceable'
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BEGIN
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DELETE FROM events
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WHERE pubkey = NEW.pubkey
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AND kind = NEW.kind
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AND event_type = 'replaceable'
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AND id != NEW.id;
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END; |