On-chain data availability (OCDA) is a hybrid approach to data storage that gives users the option of storing their data on-chain or off-chain. With the release of Loopring 3.0, OCDA was introduced as one of the newly developed features. The network achieves 2,025 transactions per second when this feature is turned off and data is stored on-chain (TPS). When OCDA is turned on and data is stored off-chain (via Validium mode), throughput can reach 16,400 TPS. However, network security at that speed is that of a consortium blockchain, which is not always ideal. Volitions are the name given to these dynamic scalability solutions. In short, OCDA and zk-Rollup technology collaborate to make Loopring 3.0 comparable to non-custodial exchanges by matching their centralized, custodial architecture.
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