MQTT v3.1.1 protocol has only 10 return codes. These return codes can represent little meaning, and the same return code value can have different meanings in different messages.
Compared with MQTT 3.1.1, MQTT 5.0 protocol adds many properties, which are distributed in variable headers and payloads of packet.
InfluxDB is an open source sequential database developed by InfluxData. It was written by Go and focuses on querying and storing sequential data with high performance. InfluxDB is lighter than the OpenTSDB database introduced in the previous issue, and is better than OpenTSDB in benchmarking indicators given officially by InfluxData.
NB-IoT is a new type of cellular technology developed by the 3GPP standardization organization. It belongs to the low-power wide-area (LPWA) IoT connection, that is mainly used to connect terminals with limited bandwidth resources, allowing terminals to collect and exchange data with less resources than GRPS, 3G, LTE and other technologies.
EMQ X has built-in support for TLS/DTLS, including support for multiple authentications, such as one-way or two-way authentication and X.509 certificate, and LB Proxy Protocol V1/2. You can enable TLS/DTLS for all protocols supported by EMQ X, or configure the HTTP API provided by EMQ X to use TLS. This article describes how to enable TLS for MQTT in EMQ X by means of self-signed certificate.
MQTT is completely different from Kafka. MQTT is a protocol and a technical standard developed by members (mostly are top engineers at IBM and Microsoft) of the OASIS Technical Committee. Kafka is an open source streaming platform that has been implemented. It was firstly developed by LinkedIn. After incubated by Apache Incubator in 2011 after opening source, it has became the top project of the Apache Software Foundation.
How to Install EMQ (emqtt) 2.3 on Linux Introduction Welcome to our EMQ (aka emqtt) how-to series. EMQ is a distributed, highly scalable and easily extensible MQTT broker written in Erlang...
In our previous article we have shown how to secure EMQ connection with SSL.
Deploying EMQ with Elastic Load Balancer on AWS Besides the benefit of multiplied service capacity, we also deploy em...