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Layer 2 solutions are already tackling one of the biggest issues of blockchain technology: scalability. Learn what they are and why they matter.<\/h2>\n

Layer 2 blockchains provide a solution to tackle layer 1 blockchains\u2019 scalability<\/p>\n

As more dapps joined the Ethereum network, the layer 1 blockchain suffered from congestion, resulting in high transaction fees. The invention of layer 2 offers a viable solution to the scaling of layer 1 blockchains.<\/strong><\/p>\n

Summary<\/strong>:<\/p>\n

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• Layer 1 is the underlying main blockchain architecture. Both Ethereum and Bitcoin are layer 1 blockchains.\u00a0<\/li>\n
• Layer 2 refers to the scaling solutions to mitigate congestion through secondary blockchains. Examples of layer 2 chains are Optimism, Arbitrum, and StarkNet.<\/li>\n
• Layer 2 blockchain addresses scalability through rollup technology, mainly Optimistic rollups and Zero-knowledge rollups.<\/li>\n<\/ul>\n

  Due to the unique architecture to guarantee decentralization and security, pioneer blockchains like Ethereum and Bitcoin cannot handle massive traffic on their networks. This is called the blockchain trilemma.\u00a0<\/p>\n

  An ideal blockchain must boast three primary properties, decentralized, secure, and scalable. Unfortunately, the blockchain trilemma states that a simple blockchain architecture can only achieve two out of three.\u00a0<\/p>\n

  Scalability is necessary if people want to enjoy the benefits of blockchain technology at an affordable cost.\u00a0 This is where \u201clayer-2\u201d solutions come into play to address the blockchain trilemma. This article will help you quickly understand the concept of layer 1 (L1) and layer 2 (L2).<\/p>\n

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