(https://news.bitcoin.com/wp-content/uploads/2017/12/bitcoin-backlog-1068x1068.png)
Exchanges overloaded. DDoS attacks. Huge price spikes, flash crashes, and order cancellations. Over 200k transactions queued, some for more than 24 hours, in the mempool – despite paying high fees. Just another crazy day in bitcoin, a land where every day seems to be wilder than the last, including higher highs, bigger swings, and record-breaking numbers across the board.
https://news.bitcoin.com/200000-unconfirmed-transactions-pile-another-crazy-day-bitcoin/