One of the benefits of the Nexus Bubble Plugin is the ability to connect it directly to the Nexus Blockchain. Certain API calls executed on mainnet through Bubble (that record data on the Nexus Blockchain) are then visible by anyone. Whether it is viewed via wallet GUI, internet browser, or through another DApp - the transparent record keeping still occurs when using Bubble. While low compared to other blockchains, Nexus does still charge fees for the use or frequency of certain API calls. Creating any type of object register (Assets, Tokens, or Namespaces) incur a fee and a debit NXS call will require NXS to send.
Once an application has been released, fees are understandable - however while in development they can be unreasonable. Thorough testing is always necessary in development, and over time it could become costly depending on the API calls being used. There will also be people who find the Bubble plugin without prior Nexus knowledge, who will not have NXS yet to execute the calls. We don’t want anyone to be excluded from interacting with the Nexus blockchain due to lack of funds… which is where the testnet server comes into play.
The Nexus testnet node has all of the same API call capabilities that the mainnet server has, without the fees being processed. It is a great way to test out the DApps’ workflow without incurring the fees. All of the data created and stored on the testnet blockchain node is even available to view, just like the mainnet data!
The current Nexus testnet web server/port is http://private.nexus.io:8070. This is what the Nexus plugin defaults to using when initially installed. Running any of the metric information calls (such as system/get/metrics) will return data like mainnet would, however just much less data as the testnet nodes have been cycled through over the years. Testnet nodes SHOULD NOT be treated as a guaranteed resource, and it is strongly recommended that developers create and host their own private nodes for long term testing situations. Information on how to set up a private node can be found in an article here, found on the Nexus Developer Docs website. Additional questions can be asked in the Nexus Developers Telegram Channel.
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