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Liquidity Distribution Overview

This is a work-in-progress document that contains a technical explanation of how credit and debt is propagated through the Synthetix protocol.

Chain Nodes​

  • Market
    • poolsDebtDistribution (dynamic, connects to distribution chain)
      • shares (usd denominated) = distribution[poolId]
      • valuePerShare = debt / liquidity
  • Pool
    • vaultsDebtDistribution (dynamic, connects to debt distribution chain)
      • shares (usd liquidity) = distribution[vaultId]
      • valuePerShare = debt / liquidity
  • Vault
    • accountsIncomingDebtDistribution (dynamic, connects to debt distribution chain)
      • shares (usd liquidity) = distribution[accountId]
      • valuePerShare = debt / liquidity
    • accountsConsolidatedDebtDistribution (static)
      • t.c.
    • accountsCollateralDistribution (static)
      • t.c.

Example Liquidity Flows​

This outlines how debt is propagated from a market, through pools, to accounts' positions in vaults.

  • For each of its configured markets…
    • Get acumMarketDebt from the market (external to distribution chain)
    • Market to Pool
      • Pass the debt to all associated pools with market.poolsDebtDistribution.distributeValue(acumMarketDebt)
      • Update the pool’s shares on market.poolsDebtDistribution by
        • acumPoolDebt = market.poolsDebtDistribution.setActorShares(poolId, newLiquidity)
    • Pool to Vault
      • Pass the debt to all associated vaults pool.vaultsDebtDistribtion.distributeValue(acumPoolDebt)
      • Update the vault’s shares on pool.vaultsDebtDistribution by
        • acumVaultDebt = pool.vaultsDebtDistribution.setActorShares(vaultId, newLiquidity)
    • Vault to Account
      • Pass the debt to all associated accounts vault.accountsDebtDistribtion.distributeValue(acumVaultDebt)
      • Update the account’s shares on vault.accountsDebtDistribution by
        • acumAccountDebt = vault.accountsDebtDistribution.setActorShares(accountId, newLiquidity)
    • Account to Consolidated debt of the account
      • vault.consolidatedDebtDistribution.setActorValue(acumAccountDebt + prevAccountDebt)

Objects​

  • Pool
    • distributeDebtToVaults()
      • calls Market.rebalance(), which returns a change in value
      • Accumulates each market’s change in value in cumulativeDebtChange
      • Bakes cumulativeDebtChange into pool.vaultsDebtDistribution.distributeValue(cumulativeDebtChange)
  • Market
    • rebalancePools()
      • calls distributeDebtToPools() - i.e. inflates the debt for all pools
      • calls adjustPoolShares(), which returns a change in value
      • returns the change in value
    • adjustPoolShares()
      • Updates the shares of each pool by calling poolsDebtDistribution.setActorShares(poolId, newLiquidity)
      • Returns the change in value
    • distributeDebtToPools()
      • Rolls external market debt to poolsDebtDistribution by inflating all of them with poolsDebtDistribution.distributeValue(acumMarketDebt)