It is powered by a new consensus algorithm published by researchers Tennage & Băsescu et al. called QuePaxa (2023). QuePaxa is an unusual choice; most consensus systems use well-established consensus algorithms like Raft, (Multi-)Paxos or Viewstamped Replication.
These algorithms are well understood, have mature implementations, and usually work well. Unfortunately, common consensus algorithms often suffer in wide-area networks with volatile network connectivity and latency, i.e., networks like the Internet, which is where Meerkat runs.
These algorithms rely on a single leader process being available and having predictable latency. If the leader goes down, experiences higher latency than usual, or is disconnected, the entire consensus system slows down or becomes unavailable until the leader is replaced.
