CKB Dev Log 2023-08-23

[anipenguin]

📸 by @contrun
“For the gate is narrow and the way is hard that leads to life, and those who find it are few.” — ‭‭Matthew‬ ‭7‬:‭14‬ ‭

Updates

Features

• CKB now supports the Replace-by-Fee feature in the transaction pool. Users can replace a stuck transaction with a higher fee rate.
  • Add feature of Replace-by-fee for tx-pool #4108
• The RFC for cell commitments is open for review. Cell commitments allow participants in the CKB network to easily prove the creation and consumption block heights of cells.
  • RFC: Cells Commitments [WIP - DO NOT MERGE] rfcs#424
• Established a repo with examples to demonstrate how to use CKB-SDKs in different scenarios.
  • ckb-sdk-examples
• Developers working with dev chains can now fine-tune epoch lengths by configuring epoch_duration_target. This is facilitated by setting permanent_difficulty_in_dummy to Dummy mode.
  • BREAK CHANGE! Consensus: epoch_duration_target now affects epoch length in Dummy mode #4097

Improvements

• Enhanced Transaction Pool Processing
  • Boosted he transaction pool's efficiency with the integration of multi_index_map. Pending transactions with higher scores now receive priority processing.
  • Tx pool rewrite with multi_index_map #3993

In Pipeline…

• Efficient Memory Handling for Smart Contracts
  • The Rust molecule library is integrating a Lazy Reading plugin to optimize memory utilization for CKB contracts. This enhancement is particularly beneficial for smart contracts operating with limited memory resources.
  • feat: Add Rust lazy reader molecule#77
• Enhanced Developer Experience
  • ckb-jsonrpc-types is being integrated into the ckb-sdk-rust, paving the way for user-friendly features in the SDK.
  • feat: add ckb-jsonrpc-types ckb-sdk-rust#85
• Performance Testing for Cell Commitments
  • Anticipating the introduction of the CellCommitments feature, comprehensive performance testing is in the pipeline. This will assess its impact on block verification times, especially under heavy data loads.
• Expanding Contract Building Horizons
  • Ongoing exploration involves using diverse C compilers for ckb contract building. An upcoming article will delve into building ckb contracts using clang and CompCert.
• Rust-Powered CKB Contract Building
  • Promising progress is being made in utilizing pure Rust for ckb contract development. The benchmarking of widely-used cryptography algorithms showcases the potential benefits.
    • https://github.com/XuJiandong/ckb-rust-algorithm-benchmarks
• Addressing Dynamic Library Alignment
  • Efforts are underway to address dynamic library alignment concerns with clang, enabling the creation of runnable dynamic libraries on the ckb platform.