hiredis from Cloud:Platform:Stack-SLE:packages project
Select Your Operating System
Add repository and install manually
For SLE 12 SP4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Cloud:Platform:Stack-SLE:packages/SLE_12_SP4/Cloud:Platform:Stack-SLE:packages.repo zypper refresh zypper install hiredis