Method put

imperative/src/impl/persistent_cache.cpp:82–93

    }

    void put(const std::string& category, const Blob& key, const Blob& value) override {
        MGB_LOCK_GUARD(m_mtx);
        std::string key_str(static_cast<const char*>(key.ptr), key.size);
        std::string redis_key_str;
        encode(category + '@' + key_str, redis_key_str, 24);
        std::string value_str(static_cast<const char*>(value.ptr), value.size);
        std::string redis_value_str;
        encode(value_str, redis_value_str);
        auto result = m_client.set(m_prefix + redis_key_str, redis_value_str);
        m_local->put(category, key, value);
        sync();
    }

    std::optional<size_t> clear() override {
        long long cursor = 0;