Nervos CKB Development Update #10

Covering Apr 22 to May 5

This post is co-authored by Ian Yang and James Chen.

TL;DR

• Capacity uses unit shannon which is 10e-8 CKBytes
• CKB will check database is compatible on startup.

Changes in RFCs

• A new syscall Load Transaction Hash is added (PR#110).

Changes in CKB

CKB v0.10.0 has released, and v0.11.0 is ready.

Features highlights in v0.11.0:

The most important change in 0.11.0 is #528: capacity uses unit shannon which is 10e-8 CKBytes (@yangby-cryptape).

We did many performance tests, @jjyr has added a sub command to ease running performance benchmarks #554. According to the benchmark result, we have applied following performance tuning:

• #587: lazy load cell output (@jjyr)
• #586: Relay transaction by hash (@TheWaWaR)
• #624: only verify unknown tx in block proposal (@jjyr)
• #601: Stop ask for transactions when initial block download (@TheWaWaR)
• #588: Initial block download message storm (@driftluo)

The CKB is in rapid development, a common gotchas is running a new version with an old incompatible database, thus we added several guards to discovery such issue earlier:

• #570: check if the data in database is compatible with the program (@yangby-cryptape)
• #569: check if genesis hash in config file was same as 0th block hash in db (@yangby-cryptape)

Changes in Toolchains

SDKs

• Rename some core types
• Update RPC types/methods and tests

CKB testnet faucet

• Improve tests and depoyments (Docker + Nginx)

CKB Explorer

• Refactor views
• Build on-chain test data
• Update with CKB’s recent changes, deploy to test server

CKB Neuron Wallet

• Initial development: UI layer, chain sync, key management, etc.