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env.md

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Environment Variables

All the Muta envs are available in this project since this project is dependent on muta-sdk, for example, MUTA_ENDPOINT

Common Env

HERMIT_PORT

The modules which is named app-* will start a server when running, so they need a port for listening.

  • type: number
  • default
    • server: 4040
    • sync: 0 (random)

HERMIT_DATABASE_URL

The database connection URI

  • type: string
  • default: (empty)

Sync

HERMIT_FETCH_CONCURRENCY

The concurrency when sync block data from a Muta instance

  • type: number
  • default: 50

HERMIT_FORCE_UNLOCK

To prevent concurrent writes from causing the transaction to be out of order, a lock is necessary. The lock may warn you when the program exits unexpectedly, or when running multiple sync

-type: 0 | 1 default: 1

HERMIT_MAX_PREFETCH_SIZE

The max size of a queue which will pre-fetch unsynced block

  • type: number
  • default: 4

Server

HERMIT_DEFAULT_LIST_SIZE

Default list size when query a list without first or last

  • type: string
  • default: 10

HERMIT_MAX_COMPLEXITY

A large query would be banned when complexity over this value. Each field corresponds to one unit of complexity, that means the complexity of a list is n(rows) * m(columns)

  • type: number
  • default: 500

HERMIT_MAX_SKIP_SIZE

Protect against excessive page-turning, which can lead to performance issues

  • type: number
  • default: 10000

HERMIT_CACHE_URL

The Redis connection URI

  • type: string
  • default: (empty)