Today＇s　Internet　service　architectures　rely　extensively　on　distributed　key-value　stores　(KV-stores)　to　meet　their　performance　requirements.　One　of　the　bottlenecks　lies　in　the　un-balanced　load　among　key-value　store　nodes　caused　by　the　skewed　workloads.　With　the　flexibility　and　power　of　programmable　switch　ASICs,　in-network　computing　becomes　a　propeller　of　application　performance.　This　paper　introduces　KVLB,　a　new　system　that　uses　the　programmable　switch　to　achieve　load　balancing　between　key-value　store　nodes.　KVLB　uses　selective　replication　of　hot　items　and　allocates　replica　node　locations　to　the　hot　items　through　multi-value　hash.　This　allows　the　switch　to　reroute　the　hot　item　to　the　replica　node　through　a　multi-valued　hash　calculation　and　requires　fewer　hardware　resources　for　programmable　switch　ASICs.　Our　experimental　results　on　an　initial　prototype　show　that　KVLB　improves　the　throughput　of　KV-stores　at　various　degrees　of　skew　and　rely　only　on　a　small　amount　of　switch　hardware　resources.　©　2022　IEEE.