Looking at the cloud service provider's bill once again increasing in price, entrepreneur Xiao Zhang almost grabbed the keyboard in frustration. As a developer who has been working in the crypto space, all his accumulated NFT assets and user data are stored on centralized servers. Just protecting these costs tens of thousands of dollars a year, and he must constantly guard against server failures, data leaks, and even the risk of accounts being frozen suddenly due to policy changes.

"If only I could store all data directly on the blockchain, that would be perfect. No one could delete it, and I wouldn't have to worry about the big companies' attitudes," he muttered repeatedly.

His friend, Engineer Li, heard him and handed over a cup of coffee: "Your idea isn't wrong, but the implementation needs a different approach. The Walrus protocol recently launched in the Sui ecosystem is designed to solve this pain point. Instead of stacking files directly on the chain, it disperses them across a decentralized network, cutting costs in half while actually increasing security."

"Walrus? How did they come up with that name? And what's the principle?" Xiao Zhang leaned in.

**1. The Secret Weapon for Cost Reduction and Efficiency**

Engineer Li put down his coffee and gestured:

**1. Cutting-Edge Erasure Coding**

Traditional decentralized storage solutions (like some leading projects) ensure security by copying a file 30 times and distributing it to 30 nodes for safekeeping. It's like backing up a photo on 30 hard drives—costs are self-explanatory.

But Walrus uses a completely different approach—erasure coding technology. It slices the file into fragments and then shuffles and recombines them using mathematical algorithms. Even if 60 out of 100 data pieces are lost, the remaining 40 can still fully restore the original file. As a result, storage costs plummet.