Jedis, Cannot get jedis connection: cannot get resource from pool

We were facing the same problem with RxJava, the application was running fine but after some time, no connections could be aquired from the pool anymore. After days of debugging we finally figured out what caused the problem:

redisTemplate.setEnableTransactionSupport(true)

somehow caused spring-data-redis to not release connections. We needed transaction support for MULTI / EXEC but in the end changed the implementation to get rid of this problem.

Still we don't know if this is a bug or wrong usage on our side.

I moved from redis.template to plain jedis. Added below configuration(can be added in redis template too) for pool and don't see any exception now:

jedisPoolConfig.setMaxIdle(30);
jedisPoolConfig.setMinIdle(10);

for redis template:

jedisConnectionFactory.getPoolConfig().setMaxIdle(30);
jedisConnectionFactory.getPoolConfig().setMinIdle(10);

Same above config can be added in redis template too.