Reactively write to redis in `REDISJSON` format - spring-boot

Question

I am using ReactiveRedisOperations with the driver of lettuce to write to Redis.
#Autowired
ReactiveRedisOperations<String, Foo> redisOperation;
public Mono<Boolean> save(Foo foo) {
redisOperation.map(operation ->
operation
.opsForValue()
.set(foo.getId(), foo);
return Mono.just(true);
}
The serialization is defined as
private <T> ReactiveRedisOperations<String, T> buildRedisOperations(ReactiveRedisConnectionFactory factory, Class<T> clazz) {
RedisSerializationContext.RedisSerializationContextBuilder<String, T> builder = RedisSerializationContext
.newSerializationContext(new StringRedisSerializer());
Jackson2JsonRedisSerializer<T> serializer = new Jackson2JsonRedisSerializer<>(clazz);
RedisSerializationContext<String, T> context = builder.value(serializer).build();
return new ReactiveRedisTemplate<>(factory, context);
}
This works however the data type of the Foo object is saved as String. I want to save the Foo object in Redisjson datatype.
How to use reactively write to redis and save in REDISJSON format?
PS: I dont want to use lua script solution for this.

Answer 1

ReactiveRedisOperations are meant for basic redis operations only (https://docs.spring.io/spring-data/redis/docs/current/api/org/springframework/data/redis/core/ReactiveRedisOperations.html).
If you want to continue using lettuce along with reactive operations, use https://github.com/redis-developer/lettucemod instead.
This library provides RedisJSON support

Answer 2

Have you tried to initialize a dedicate ReactiveRedisTemplate bean for Foo class?
#Bean
public ReactiveRedisTemplate<String, Foo> reactiveRedisTemplate(ReactiveRedisConnectionFactory factory) {
RedisSerializationContext.RedisSerializationContextBuilder<String, Foo> builder = RedisSerializationContext.newSerializationContext(new StringRedisSerializer());
Jackson2JsonRedisSerializer<Foo> serializer = new Jackson2JsonRedisSerializer<>(Foo.class);
RedisSerializationContext<String, Foo> context = builder.value(serializer).build();
return new ReactiveRedisTemplate<>(factory, context);
}
And use it to store values in Redis.
#Autowired
ReactiveRedisTemplate<String, Foo> reactiveRedisTemplate;
public Mono<Boolean> save(Foo foo) {
return reactiveRedisTemplate
.opsForValue()
.set(foo.getId(), foo);
}