Scalability Trilemma
theory · scaling
The idea that blockchains face trade-offs among decentralization, security, and scalability when designing consensus and capacity.
1.definition
The scalability trilemma is a framing for the difficulty of maximizing decentralization, security, and scalability at the same time. It is not a mathematical law, but it highlights real engineering trade-offs.
2.mitigations
Modern designs try to soften the trade-off with Layer 2 systems, better signature aggregation, sharding, improved networking, and more efficient virtual machines. Each approach moves some complexity or trust assumptions elsewhere.
Related terms
Consensus
→The process by which blockchain participants agree on valid transactions, blocks, and ledger history.
security · blockchain
Layer-2
→A protocol built around a Layer-1 to move activity off the base chain while relying on it for settlement or security.
scaling · architecture
Throughput
→The rate at which a blockchain processes transactions or data over time, often measured in TPS or bytes per block.
performance · scaling
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