Railgun v5 has landed: better, faster, lighter
Sep 1, 2015John Graham-Cumming

Summary
Railgun v5 introduces significant improvements including reduced memory utilization and CPU requirements, a new lighter-weight binary wire protocol, an extra layer of traditional non-delta compression for increased compression ratios (10-15%), streaming mode for large downloads to reduce download times, better utilization of origin web server connections via connection pooling and HTTP keep-alives, and improved cryptographic infrastructure with a new CA and bidirectional TLS certificate verification. It also offers subdomain assignment for partners and is now available on RHEL and CentOS 7.