Daan MeijerandClaude Opus 5.5
8475969145
A chunk not in after NNTP_HEDGE_AFTER_SECONDS (10) is asked again on one of NNTP_HEDGE_CONNECTIONS spare connections; the first answer wins and the other connection is closed (lib/nntp/hedge.ts, tested). Connections can be retired after NNTP_CONNECTION_MAX_MINUTES (±25%). The prefetch report counts hedges and slow first requests by connection age. Homelab, 15 min each: hedging on (40 + 6) 280k articles/s, off 273k. The second request won about half of its races, but ~25-35% of first requests were slow (>10 s) at every connection age, so neither helps: Eweka is slow under our load, not on particular connections. Both off by default; the age statistics stay. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
66 lines
2.4 KiB
TypeScript
66 lines
2.4 KiB
TypeScript
/*
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|--------------------------------------------------------------------------
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| Environment variables service
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|--------------------------------------------------------------------------
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| The `Env.create` method creates an instance of the Env service. The
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| service validates the environment variables and also cast values
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| to JavaScript data types.
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*/
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import { Env } from '@adonisjs/core/env'
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export default await Env.create(new URL('../', import.meta.url), {
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// Node
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NODE_ENV: Env.schema.enum(['development', 'production', 'test'] as const),
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PORT: Env.schema.number(),
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HOST: Env.schema.string({ format: 'host' }),
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LOG_LEVEL: Env.schema.string(),
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// App
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APP_KEY: Env.schema.secret(),
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APP_URL: Env.schema.string({ format: 'url', tld: false }),
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// Session
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SESSION_DRIVER: Env.schema.enum(['cookie', 'memory', 'database'] as const),
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// Database
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DB_HOST: Env.schema.string({ format: 'host' }),
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DB_PORT: Env.schema.number(),
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DB_USER: Env.schema.string(),
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DB_PASSWORD: Env.schema.string.optional(),
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DB_DATABASE: Env.schema.string(),
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DB_POOL_MAX: Env.schema.number.optional(),
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// Tablespace for the chunk store (the HDD on homelab).
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CHUNK_TABLESPACE: Env.schema.string.optional(),
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DB_DEBUG: Env.schema.boolean.optional(),
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// NNTP (the coordinator's relay; edge:bench --capture)
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NNTP_HOST: Env.schema.string.optional(),
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NNTP_PORT: Env.schema.number.optional(),
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NNTP_USER: Env.schema.string.optional(),
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NNTP_PASSWORD: Env.schema.string.optional(),
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NNTP_SECURE: Env.schema.boolean.optional(),
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NNTP_CONNECTIONS: Env.schema.number.optional(),
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NNTP_TIMEOUT_MS: Env.schema.number.optional(),
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NNTP_HEDGE_AFTER_SECONDS: Env.schema.number.optional(),
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NNTP_HEDGE_CONNECTIONS: Env.schema.number.optional(),
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NNTP_CONNECTION_MAX_MINUTES: Env.schema.number.optional(),
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// Newznab API key (empty: no key needed)
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NEWZNAB_API_KEY: Env.schema.secret.optional(),
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// Coordinator
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RANGE_ARTICLES: Env.schema.number.optional(),
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TAIL_EVERY_SECONDS: Env.schema.number.optional(),
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TAIL_MIN_ARTICLES: Env.schema.number.optional(),
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TAIL_MAX_DELAY_MINUTES: Env.schema.number.optional(),
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CHUNK_ARTICLES: Env.schema.number.optional(),
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LEASE_TTL_SECONDS: Env.schema.number.optional(),
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SPOOL_DIR: Env.schema.string.optional(),
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SPOOL_AHEAD_PER_LEASE: Env.schema.number.optional(),
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SPOOL_MIN_AHEAD: Env.schema.number.optional(),
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SPOOL_MAX_GB: Env.schema.number.optional(),
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})
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