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Check the value o lock key before extend call #3

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Check the value o lock key before extend call #3

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6 changes: 4 additions & 2 deletions lib/Redis/DistLock.pm
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Original file line number Diff line number Diff line change
Expand Up @@ -23,8 +23,10 @@ end
' }
sub RELEASE_SHA1() { sha1_hex( RELEASE_SCRIPT ) }
sub EXTEND_SCRIPT() { '
if redis.call( "set", KEYS[1], ARGV[1], "XX", "PX", ARGV[2] ) then
return "OK"
if redis.call( "get", KEYS[1] ) == ARGV[1] then
if redis.call( "set", KEYS[1], ARGV[1], "XX", "PX", ARGV[2] ) then
return "OK"
end
else
return redis.call( "set", KEYS[1], ARGV[1], "NX", "PX", ARGV[2] )
end
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