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How does the MQTT work with multiple brokers?

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How does the MQTT work with multiple brokers

This blog post will explore how MQTT works with multiple brokers. We’ll discuss the benefits and drawbacks of using multiple brokers and provide a tutorial on how to connect to multiple brokers using the Paho Python client.

What is MQTT?

MQTT is a lightweight publish/subscribe messaging protocol frequently used in IoT applications. It was designed to be used on low-bandwidth, high-latency networks and therefore has a very small footprint.

MQTT is based on a publish/subscribe model; clients can subscribe to topics and receive messages when new data is published. Because it is a lightweight protocol, it is very efficient for devices with limited resources, such as battery-powered sensors.

There are a few different versions of MQTT; the most common is version 3.1.1, the version supported by the Eclipse Mosquitto broker. Other versions include 3.1 and 5.0 (which are still in development).

What is an MQTT broker?

A broker is an intermediary between a producer and a consumer. Producers are clients that publish messages to the broker. Consumers are clients that subscribe to topics and receive messages from the broker. The mqtt broker is responsible for delivering messages to the appropriate consumers.

There are two main types of brokers: centralized and federated. Centralized brokers keep all topics in a central location. This approach has the advantage of being simple to set up and manage. However, it can become a bottleneck if many producers or consumers or the network connection between them is slow. 

Federated brokers allow producers and consumers to connect to different brokers to distribute the load. This approach is more complex to set up but can offer better performance and scalability.

How does MQTT work with multiple brokers?

MQTT is a publish/subscribe protocol that allows clients to connect to multiple brokers. Each client can subscribe to one or more topics and have one or more subscribers. When a client publishes a topic, the broker will send the message to all subscribers.

There are two main types of MQTT brokers: those that run on a server and those that run on a device. Server-based brokers are typically used in conjunction with a web server and are responsible for handling all incoming and outgoing messages. On the other hand, device-based brokers are designed to run on devices with limited resources, such as sensors or embedded systems.

One benefit of using MQTT with multiple brokers is that it can provide redundancy in case one broker goes down. Another benefit is that it allows you to scale your system by adding additional brokers as needed.

The benefits of using multiple brokers with MQTT

There are many benefits to using multiple brokers with MQTT. For example, you can use one broker for your home automation system and another for your office devices.

 This ensures that your home automation system is always available even if your office network is down. Additionally, using multiple brokers can improve performance and reliability. For example, if one broker is experiencing a high traffic volume, the other broker can alleviate the strain.

How to set up an MQTT system with multiple brokers

MQTT is a publish/subscribe messaging protocol designed for lightweight M2M communications. It is frequently used in IoT applications because it has a small footprint, low power consumption, and supports many platforms.

One of the great features of MQTT is that it supports multiple brokers. This means you can have several broker servers running on different machines, and they will all work together to provide a reliable and scalable MQTT service.

This article will look at how to set up an MQTT system with multiple brokers. We’ll cover the basics of setting up each broker, configuring them to work together, and testing the system.

By the end of this article, you should have a good understanding of how an MQTT system with multiple brokers works and be able to set one up yourself. Let’s get started!

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Conclusion

The MQTT protocol is designed to work with multiple brokers. This allows you to have greater flexibility and control over your message delivery. With multiple brokers, you can specify which broker should receive each message. You can also set up failover so that if one broker goes down, your messages will be delivered through another.

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What Are the Best Bags for Taking Food to Work?

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Best Bags for Taking Food

If you are one of those who eat at the office or have to eat at the study center where you go daily, surely you have asked yourself: What bag or lunch box do I choose to store my food containers?

We have made a selection of the best-selling food carrier bags on Amazon and the most outstanding bags to take food from the Fnac store. There are many types and models!

The split day in the workplace forces us, on many occasions, to have to take food to the workplace because we do not have time to go home to eat. The same happens with many university students who have classes in the morning and in the afternoon.

And since this routine can make us bored with all the Tupperware meals, we recommend that you choose quick and different Tupperware meals for each day of the week. Although the most common is to prepare pasta dishes or salads, there are many tapas dishes that you can take without problem (soups with foundation, stews, legumes in salads or stews.

On the other hand, it is also very important to have an organization of all the tapas menus to ensure a healthy, varied, and balanced diet.

And once the daily menu is ready, all we need is the bag to take lunch boxes to work or university. Below we show you a very varied list of the different food carrier bags that you can find both on Amazon and on Fnac. Choose the one that best suits you!

Amazon’s Best Lunch Bags

At Amazon, you can find multiple bags for food, but we will show you which ones are the best sellers and which ones we would choose to take to work daily. Take a look and choose the one that best fits into your day-to-day!

Tatay casual bag (with 4 airtight containers)

One of Amazon’s best-selling classic lunch bags is this Tatay brand casual lunch bag with a square shape and a gray checkerboard design. Its capacity is 3 liters, it measures 22.5cm x 10cm x 22cm, and includes 4 airtight containers (2 round containers of 0.2 liters and 2 oval containers of 0.5 liters).

This food carrier bag offers high thermal resistance thanks to its triple-layer insulating material and a piece of waterproof fabric that facilitates internal cleaning. In addition, it includes an internal pocket to place cutlery and napkins and an easy opening on both sides. Its price is very economical (only 18.09 euros with the four containers included).

It is an ideal bag to take to work thanks to its two handles (one to carry in your hand and the other to hang as a shoulder strap). This is the best-selling color and type of food carrier bag , but you can find a wide range of bags from this brand in different colors and sizes.

Roll & Go Tatay bag (with 2 airtight containers)

Another of Amazon’s best-selling takeout bags is this roll & go food carrier bag from the Tatay brand with a roll-up design that will allow you to fold it according to the number of containers you add each day. Its capacity is 4 liters, it measures 22 cm x 11 cm x 22.5 cm, and includes 2 airtight plastic containers of 0.5 liters.

This food carrier bag has a high thermal resistance thanks to its triple-layer insulating material and waterproof fabric that facilitates its internal cleaning. It includes two outer pockets to place fruit or cutlery and has a double closure system (velcro and buckle).

You can find it in two colors (blue and grey) and its price is very cheap (16.49 euros).

Maxtop food bag

This Maxtop food carrier bag is Amazon’s best-selling cooler bag thanks to its capacity and ease of transport. It is perfect for those who spend the whole day away from home and need to take lunch, dinner, snacks, and some other snacks with them. It has a size of 25.4cm x 17.8cm x 25.4cm and its capacity is 10 liters, so you can also use it to take drinks or food to the beach or on picnic getaways.

It includes an interior mesh pocket to place cutlery, an exterior pocket (to store a mobile phone, keys, wallet…), and two zippered mesh pockets for a drink or an umbrella. Thanks to its 5 mm thick insulating pearl foam it can keep food and drinks cold or keep them hot for up to 4 hours.

In addition, its strap is adjustable and removable so you can choose if you want to carry it as a shoulder bag or as a briefcase. Its price is 21.99 euros.

Tatay mini bag (with hermetic lid)

Another option for those who eat only one dish and want to take little bulk to work is to use this mini Tatay food carrier bag with a capacity of 1.5 liters. It measures 21.5cm x 9cm x 12cm and is made with a triple layer of a resistant material that makes it thermal and waterproof.

This food bag has an interior mesh pocket to store cutlery and includes a 0.5-liter oval plastic airtight container. It will be perfect to take to work and take up as little space as possible. You can get it for less than 12 euros.

Shell Tatay bag (with 2 airtight containers)

And another type of bag to carry Tupperware from the Tatay brand is this Shell bag with an opening on both sides and a capacity of 5.6 liters. Thanks to its rigid case (from Safecover), it will be safe and comfortable to carry all kinds of food without damaging it with knocks.

This food carrier bag has a high thermal and waterproof resistance thanks to its triple layer of insulating material and offers a padded handle to carry the bag hanging more comfortably. It includes 2 airtight containers of 0.75 liters each and its price is 26.10 euros.

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5 Tips for Shipping Your Products Sold Online

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wholesale shipping suppliers

You have finally decided to sell your products on Amazon, eBay, or Etsy. Congratulations and welcome to the Internet! However, you must absolutely pack the items sold carefully before shipping them. Don’t fall into the trap of cutting packaging costs for the sake of the economy. Broken items lead to bad reviews, and bad reviews could cost you a lot of money before your business even starts to get popular. eBay even advises customers to check each seller’s feedback to see if you’re packaging and refund policy is reliable in case something happens to the package, despite the seller’s best efforts. Therefore, you need to know exactly what type of packaging is used to ensure that your package arrives at its destination safely. What should you consider when choosing your packaging products?

  1. Choose the right packing materials

Before you even know how to pack your items or what products to use, you’ll need to know where to get the Wholesale shipping supplies, you’ll need. If you don’t already have a few cardboard boxes lying around, find a courier company near you. Packaging supplies like envelopes, tubes, and boxes are usually available free from companies that provide overnight delivery services. If you want to take advantage of lower-cost shipping options, then you will need to provide your own packing materials.

Supplies are varied and plentiful, but how you use them will depend on the item you wish to ship. For example, if you are selling the first edition of rare books online, do not use padded folders or envelopes to ship them, as these are just envelopes lined with bubble wrap. They do not offer sufficient protection for this type of item, especially if the book is heavy. For example, the corner of books can be easily crushed. Books should be sealed in plastic before shipping in boxes. Additionally, you should ensure that each item you ship contains a box certificate, also known as a “quality stamp”. It is a seal found on the bottom of every shipping container that has been approved by the postal or shipping company. The box certificate specifies the weight limits, maximum capacity, and crush test for that box. You must observe these limits when packing; otherwise, the box will be damaged.

  1. Opt for packaging material that will withstand shocks

Using the right material to ensure that the package arrives safely and in good condition will undoubtedly contribute to your reputation as an online seller. Otherwise, you will receive bad reviews if the product is damaged when it arrives at the customer.

Newsprint is often used to wrap items or to replace styrofoam flakes or carton boxes. However, newsprint is not recommended for packing fragile items because it lacks a key element of effective packing, memory. Memory refers to the ability to cushion material to absorb shock and return to its original shape. Newsprint tends to crumble and is not effective in protecting fragile items from impact damage. Bubble wrap and Styrofoam flakes are better options and can be found easily at shipping centers or big box stores.

Another consideration: stains. If the item to be shipped may be stained or damaged by newspaper ink, you will need to consider an alternative. For example, you can wrap a book in a piece of kraft paper, which will protect the corners so they won’t bend in transit. Kraft paper can be serrated or multi-ply, providing protection for fragile items. Kraft paper is also lightweight, which will save you shipping costs. And it is biodegradable, a quality to be promoted and which will contribute to your reputation as an eco-responsible company.

  1. Beware of cold weather: the enemy of every fragile package

Your customers may not know this, but if they are buying china, glass, or other fragile items from you, they should be aware of the weather conditions when receiving the package. If the mercury drops below zero when the package is delivered, they shouldn’t open the package right away and wait until it’s at room temperature before touching it. Hot hands handling an item that has been exposed to freezing winds could break the item in question, and you will be the one to receive a bad review of “Substandard Merchandise”. Therefore, be sure to add a disclaimer on the article’s webpage, in the confirmation email you send to your customer, and write it in large letters on the box.

  1. Wrap your items properly

You don’t have to use shrink plastic to wrap your items, stretch film will be just fine, especially if you want to keep your costs down. If you need to pack several small items and are using white Styrofoam flakes or clear bubble wrap, choose colored stretch wrap to ensure there are no items left in the box when your customers will open the package. If you are shipping several fragile items, such as a set of glasses, it might be helpful to take the boxes from the supplier and insert strips of cardboard into them to separate the bubble-wrapped items. If these fragile objects are plates, insert a piece of cardboard between each plate.

  1. Get it right the first time; you won’t get a second chance!

It doesn’t matter how you package your item or which courier company you use; your package is just one of many that are handled by employees every day. There is always a risk that your package will be mishandled. Take care to wrap and pack your items properly from the start to ensure they arrive at their destination in good condition, no matter what happens in transit. Good luck and happy packing!

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What Display Material Is Best for Your Small Business?

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Display Material for Small Business?

Whether it’s for your grand opening, a brand event or your storefront, display material is a great way to convey a message to the public and attract potential customers. Given the vast choice available to you, however, finding the type of display that best suits your objectives requires some thought. To help you find your way around, here is an overview of the possibilities that might interest you.

Foam panels

Panels with a foam core are light and easy to transport since they are made of a material that resembles that found in expanded polystyrene foam (Styrofoam). These signs have an extra layer of thickness compared to simple paper posters. With their sturdy foam backing, they are ideal for signage, presentations, and commercial and event materials. Their exterior is covered with matte paper that adds style to your message. It can be a cheap solution to showcase your visual concept without having to frame it. However, foam panels resist damage poorly and can easily be punctured. And since they are not waterproof, it is best to limit their use indoors.

Coroplast

Coroplast is the registered brand name for corrugated plastic sheets. This material features a waterproof and durable plastic coating that lends itself well to displays placed outside to attract the public. In addition, it has a glossier finish than foam panels. Most exterior signs are made of this weather-resistant and relatively inexpensive material, making it a good choice if you need a large number of copies.

PVC

Polyvinyl chloride (PVC) panels are rigid, durable, lightweight, and waterproof – all characteristics that lend themselves well to outdoor use. This type of display has a smoother matte finish, ideal for highlighting, on one or both sides, a premium color visual. Due to its composition, it is not as prone to damage as foam panels, which helps to maintain its quality once outdoors.

Vinyl banners

Portable and reusable, banners can be transported almost everywhere: busy places, special events, and trade shows. Plus, they can be reused over and over again, which is appreciated by most small business owners who don’t want to keep buying new advertising material. The plastic contained in the vinyl ensures durability against wear and weather. Since vinyl is not a rigid material, the banners must however be fixed to a support or provided with eyelets that can receive a rope or a cable. And just like fabric, they can be hemmed for a neater effect.

Paper posters

Posters are a great visual aid that can help raise awareness for small businesses wherever they are displayed. They are particularly interested in a shop window, where they inform passers-by of events taking place in the store. They are usually printed on matte or glossy paper in virtually any size, and for less than other products. Most are intended for single use.

Explore more display options at The UPS Store

Incorporating display into your advertising strategy is an affordable and customizable way to promote the products and services offered by your small business. You can have all of the above displays custom printed at a UPS Store location. Feel free to call us to learn more about our professional printing services, or visit our online printing portal to browse, create or download the model of your choice and opt for one of the products from our range. specially designed to meet your needs. Otherwise, drop by a center near you!

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