# v1.5.3
## Package Downloads
### RPM
Cypress Packages
* [kcnd-v1.5.3-0.el7.x86\_64.rpm](http://packages.klaytn.net/klaytn/v1.5.3/kcnd-v1.5.3-0.el7.x86_64.rpm)
* [kpnd-v1.5.3-0.el7.x86\_64.rpm](http://packages.klaytn.net/klaytn/v1.5.3/kpnd-v1.5.3-0.el7.x86_64.rpm)
* [kend-v1.5.3-0.el7.x86\_64.rpm](http://packages.klaytn.net/klaytn/v1.5.3/kend-v1.5.3-0.el7.x86_64.rpm)
Baobab Packages
* [kcnd-baobab-v1.5.3-0.el7.x86\_64.rpm](http://packages.klaytn.net/klaytn/v1.5.3/kcnd-baobab-v1.5.3-0.el7.x86_64.rpm)
* [kpnd-baobab-v1.5.3-0.el7.x86\_64.rpm](http://packages.klaytn.net/klaytn/v1.5.3/kpnd-baobab-v1.5.3-0.el7.x86_64.rpm)
* [kend-baobab-v1.5.3-0.el7.x86\_64.rpm](http://packages.klaytn.net/klaytn/v1.5.3/kend-baobab-v1.5.3-0.el7.x86_64.rpm)
Common Packages
* [kscnd-v1.5.3-0.el7.x86\_64.rpm](http://packages.klaytn.net/klaytn/v1.5.3/kscnd-v1.5.3-0.el7.x86_64.rpm)
* [kspnd-v1.5.3-0.el7.x86\_64.rpm](http://packages.klaytn.net/klaytn/v1.5.3/kspnd-v1.5.3-0.el7.x86_64.rpm)
* [ksend-v1.5.3-0.el7.x86\_64.rpm](http://packages.klaytn.net/klaytn/v1.5.3/ksend-v1.5.3-0.el7.x86_64.rpm)
* [kbnd-v1.5.3-0.el7.x86\_64.rpm](http://packages.klaytn.net/klaytn/v1.5.3/kbnd-v1.5.3-0.el7.x86_64.rpm)
* [kgen-v1.5.3-0.el7.x86\_64.rpm](http://packages.klaytn.net/klaytn/v1.5.3/kgen-v1.5.3-0.el7.x86_64.rpm)
* [homi-v1.5.3-0.el7.x86\_64.rpm](http://packages.klaytn.net/klaytn/v1.5.3/homi-v1.5.3-0.el7.x86_64.rpm)
### Linux
Cypress Packages
* [kcn-v1.5.3-0-linux-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kcn-v1.5.3-0-linux-amd64.tar.gz)
* [kpn-v1.5.3-0-linux-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kpn-v1.5.3-0-linux-amd64.tar.gz)
* [ken-v1.5.3-0-linux-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/ken-v1.5.3-0-linux-amd64.tar.gz)
Baobab Packages
* [kcn-baobab-v1.5.3-0-linux-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kcn-baobab-v1.5.3-0-linux-amd64.tar.gz)
* [kpn-baobab-v1.5.3-0-linux-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kpn-baobab-v1.5.3-0-linux-amd64.tar.gz)
* [ken-baobab-v1.5.3-0-linux-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/ken-baobab-v1.5.3-0-linux-amd64.tar.gz)
Common Packages
* [kscn-v1.5.3-0-linux-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kscn-v1.5.3-0-linux-amd64.tar.gz)
* [kspn-v1.5.3-0-linux-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kspn-v1.5.3-0-linux-amd64.tar.gz)
* [ksen-v1.5.3-0-linux-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/ksen-v1.5.3-0-linux-amd64.tar.gz)
* [kbn-v1.5.3-0-linux-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kbn-v1.5.3-0-linux-amd64.tar.gz)
* [kgen-v1.5.3-0-linux-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kgen-v1.5.3-0-linux-amd64.tar.gz)
* [homi-v1.5.3-0-linux-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/homi-v1.5.3-0-linux-amd64.tar.gz)
### MacOS
Cypress Packages
* [kcn-v1.5.3-0-darwin-10.10-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kcn-v1.5.3-0-darwin-10.10-amd64.tar.gz)
* [kpn-v1.5.3-0-darwin-10.10-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kpn-v1.5.3-0-darwin-10.10-amd64.tar.gz)
* [ken-v1.5.3-0-darwin-10.10-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/ken-v1.5.3-0-darwin-10.10-amd64.tar.gz)
Baobab Packages
* [kcn-baobab-v1.5.3-0-darwin-10.10-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kcn-baobab-v1.5.3-0-darwin-10.10-amd64.tar.gz)
* [kpn-baobab-v1.5.3-0-darwin-10.10-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kpn-baobab-v1.5.3-0-darwin-10.10-amd64.tar.gz)
* [ken-baobab-v1.5.3-0-darwin-10.10-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/ken-baobab-v1.5.3-0-darwin-10.10-amd64.tar.gz)
Common Packages
* [kscn-v1.5.3-0-darwin-10.10-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kscn-v1.5.3-0-darwin-10.10-amd64.tar.gz)
* [kspn-v1.5.3-0-darwin-10.10-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kspn-v1.5.3-0-darwin-10.10-amd64.tar.gz)
* [ksen-v1.5.3-0-darwin-10.10-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/ksen-v1.5.3-0-darwin-10.10-amd64.tar.gz)
* [kbn-v1.5.3-0-darwin-10.10-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kbn-v1.5.3-0-darwin-10.10-amd64.tar.gz)
* [kgen-v1.5.3-0-darwin-10.10-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/kgen-v1.5.3-0-darwin-10.10-amd64.tar.gz)
* [homi-v1.5.3-0-darwin-10.10-amd64.tar.gz](http://packages.klaytn.net/klaytn/v1.5.3/homi-v1.5.3-0-darwin-10.10-amd64.tar.gz)
### Windows
* Not supported yet
## Release Notes
### New Features
* Implemented a streaming module to push fetched blockchain data to Kafka in real-time
* Implemented a Kafka client (#685)
* Added options for Kafka (#689)
* Implemented a Kafka consumer (#697)
* Implemented Remote Cache (redis) (#681)
* Implemented Redis pub/sub for the latest block (#676)
* Implemented DB Migration feature (#648)
* Implemented StateTrieNode cache dump feature to restore the cache after restart for performance boost at cold start (#692, #702)
### Improvements
* Fixed wrong status API output of state trie migration (#703)
* Fixed the validation logic of a role-based key including `AccountKeyLegacy` (#674)
### Miscellaneous
* Added options to disable Fetcher/Downloader/Worker (#680, #688)
* Implemented to generate the genesis block with existing chain data (#649)
* Removed the unused flag `--cache.writethrough` (#682)
* Added an error log when failed to read the trie DB (#683)
* Added the staking contract source code (#699)
* Added `--start-block-num` to test past blocks (#711)
* Added a validity check when a keystore is created (#725)
* Added read/write performance metrics for Level DB (#726)
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