Too expensive to use. (Dont get mad)

• l2beat

  628 457 9.9 TypeScript

  L2BEAT is an analytics and research website about Ethereum layer two (L2) scaling solutions.

  

As for which L2s to use, the two most commonly used ones right now are Polygon and Arbitrum, but there are others (18 right now, 19 if you include Polygon). L2Beat is a good site to use to look at the different L2s available and compare them, and L2Fees is good to use to compare fees between different L2s and the L1 chain.

• polygon-edge

  79 954 9.3 Go

  A Framework for Building Ethereum-compatible Blockchain Networks

  

There's generally three different types of L2s in use right now: - Side chains, which are technically not L2s, but most people consider them to be L2s. The main one is Polygon, but there are others. These are entirely new blockchains with their own consensus and security, that support the EVM (the engine at the heart of Ethereum) and many of the same dapps that are on Ethereum, that are connected to Ethereum (or even other chains) via a bridge. - Optimistic rollups, which are true L2s. The two main ones right now are Arbitrum and Optimism. These are harder to explain, but are basically special contracts on the Ethereum L1 that take a bunch of transactions (both from the Ethereum L1 and from within the rollup itself), will execute them off the L1 chain (allowing them to be executed much, much faster), and will then post transaction data onto the L1 chain, where transactions are secured by the L1 chain. These support the EVM, and are somewhat comparable to side chains in how much they reduce fees, but are much more secure than side chains, since rollups in general piggyback off the L1 chain for their transaction security and decentralisation. - ZK rollups. There's a few, the main ones right now being Loopring and dYdX, with StarkNet being a promising one that I'll talk about at the end. Like optimistic rollups, ZK rollups are the same special contracts that execute transactions off chain and post data on chain, but ZK rollups are more secure and faster/cheaper than optimistic rollups, with one major downfall: the (current) lack of EVM compatibility. ZK rollups at the moment do not support the EVM, and so cannot support any dapps whatsoever, with dapp-esque features having to be built directly into the rollup (Loopring is a decentralised exchange in rollup form, as is dYdX, for example). It's best to think of these as single applications, but work is being done to make an EVM-compatible ZK rollup, in the form of StarkNet. If StarkNet is successful, we should see dapp ecosystems flourish in ZK rollups, like they have in side chains and optimistic rollups.

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

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