Simple script to migrate all Redis keys from one server (REDIS_ORIGIN_URL) to another (REDIS_DESTINATION_URL)
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# NOTE: Don't get your two Redis URLs mixed up or you'll lose data! | |
require "redis" | |
redis1 = Redis.new(url: ENV.fetch("REDIS_ORIGIN_URL")) | |
redis2 = Redis.new(url: ENV.fetch("REDIS_DESTINATION_URL")) | |
# NOTE: Uncomment this if you want to clear out all Sidekiq stats from the ORIGIN(!) server | |
# redis1.pipelined do |pipeline| | |
# redis1.keys("stat:processed:*").each do |key| | |
# puts "Deleting #{key}" | |
# pipeline.del(key) | |
# end | |
# end | |
# | |
# redis1.pipelined do |pipeline| | |
# redis1.keys("stat:processed:*").each do |key| | |
# puts "Deleting #{key}" | |
# pipeline.del(key) | |
# end | |
# end | |
# Clear all redis2 keys | |
redis2.flushdb | |
redis1.keys.each do |key| | |
puts "Setting #{key}" | |
puts "Type: #{redis1.type(key)}" | |
case redis1.type(key) | |
when "string" | |
redis2.set(key, redis1.get(key)) | |
when "list" | |
redis2.del(key) | |
redis1.lrange(key, 0, -1).each do |value| | |
redis2.rpush(key, value) | |
end | |
when "set" | |
redis2.del(key) | |
redis1.smembers(key).each do |value| | |
redis2.sadd(key, value) | |
end | |
when "zset" | |
redis2.del(key) | |
redis1.zrange(key, 0, -1, with_scores: true).each do |value, score| | |
redis2.zadd(key, score, value) | |
end | |
when "hash" | |
redis2.del(key) | |
redis1.hgetall(key).each do |field, value| | |
redis2.hset(key, field, value) | |
end | |
end | |
end |
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