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Posted by Richy George on 30 November, 2022This post was originally published on this site
The low-code or no-code platform market has hundreds of vendors, which produce products of varying utility, price, convenience, and effectiveness. The low-code development market is at least partially built on the idea of citizen developers doing most of the work, although a 2021 poll by vendor Creatio determined that two-thirds of citizen developers are IT-related users. The same poll determined that low code is currently being adopted primarily for custom application development inside separate business units.
When I worked for a low-code or no-code application platform vendor (Alpha Software) a decade ago, more than 90% of the successful low-code customer projects I saw had someone from IT involved, and often more than one. There would usually be a business user driving the project, supported by a database administrator and a developer. The business user might put in the most time, but could only start the project with help from the database administrator, mostly to provide gated access to corporate databases. They usually needed help from a developer to finish and deploy the project. Often, the business user’s department would serve as guinea pigs, aka testers, as well as contributing to the requirements and eventually using the internal product.
Appsmith started as an internal tool for a game development company. “A few years ago, we published a game that went viral. Hundreds of help requests came in overnight. We needed a support app to handle them fast. That’s when we realized how hard it was to create a basic internal app quickly! Less than a year later, Appsmith had started taking shape.”
Starting with an internal application and enhancing it for customer use is a tough path to take, and doesn’t often end well. Here’s a hands-on review to help you decide whether Appsmith is the low-code platform you’ve been looking for.
You can connect to data sources from Appsmith using its direct connections, or by using a REST API. Supported data sources currently include Amazon S3, ArangoDB, DynamoDB, ElasticSearch, Firestore, Google Sheets, MongoDB, Microsoft SQL Server, MySQL, PostgreSQL, Redis, Redshift, Snowflake, and SMTP (to send mail). Many of these are not conventionally considered databases. Appsmith encrypts your credentials and avoids storing data returned from your queries. It uses connection pools for database connections, and limits the maximum number of queries that can run concurrently on a database to five, which could become a bottleneck if you have a lot of users and run complex queries. Appsmith also supports 17 API connectors, some of which are conventionally considered databases.
Appsmith offers about 45 widgets, including containers and controls. You can drag and drop widgets from the palette to the canvas. Existing widgets on the canvas will move out of the way of new widgets as you place them, and widgets can resize themselves while maintaining their aspect ratios.
You can use queries to display raw or transformed data in a widget, display lists of data in dropdowns and tables, and to insert or update data captured from widgets into your database. Appsmith is reactive, so the widgets are automatically updated whenever the data in the query changes.
As of October 5, 2022, Appsmith has announced a number of improvements. First, it has achieved SOC2 Type II certification, which means that it has completed a third-party audit to certify its information compliance. Second, it has added GraphQL support. GraphQL is an open source data query and manipulation language for APIs, and a runtime for fulfilling queries with existing data; it was developed by Facebook, now Meta.
Appsmith now has an internal view for console logs; you don’t have to use the browser’s debugger. It also has added a widget that allows users to scan codes using their device cameras; it supports 12 formats, including 1D product bar codes such as UPC-A and -E, 1D industrial bar codes such as Code 39, and 2D codes such as QR and Data Matrix. It added three new slider controls: numbers, a range, and categories. Appsmith’s engineers halved the render time for widgets by only redrawing widgets that have changed.
You can use the cloud version of Appsmith (sign up at https://appsmith.com/) or host Appsmith yourself. The open source version of Appsmith is free either way. Appsmith recommends using Docker or Kubernetes on a machine or virtual machine with two vCPUs and 4GB of memory. There are one-button install options for Appsmith on AWS and DigitalOcean.
If you want priority support, SAML and SSO, and unlimited private Git repos, you can pay for Appsmith Business. This service is open for early access as of this writing.
Appsmith widgets include most of the controls and containers you’d expect to find in a drag-and-drop UI builder. They include simple controls, such as text, input, and button controls; containers such as generic containers, tabs, and forms; and media controls such as pictures, video players, audio in and out, a camera control for still and video shooting, and the new code scanner.
I went through the introductory Appsmith tutorial to build a customer support dashboard in the Appsmith Cloud. It uses a PostgreSQL database pre-populated with a users table. I found the tutorial style a little patronizing (note all the exclamation points and congratulatory messages), but perhaps that isn’t as bad as the “introductory” tutorials in some products that quickly go right over users’ heads.
Note that if you have a more advanced application in mind, you might find a starter template among the 20 offered.
The Appsmith tutorial starts with a summary of how Appsmith works.
Here is the application we’re trying to build. I have tested it by, among other things, adding a name to record 8.
Here’s a test of the
SELECT query for the user’s table in the SQL sandbox.
Next, we view the property pane for the Customers table.
Now, we can start building the Customer update form.
Here, we’ve added an Update button below the form. It is not yet bound to an action.
The first step in processing the update is to execute the
updateCustomerInfo query, as shown here.
updateCustomerInfo query is an SQL
The second step in the update is to get the customers again once the first query completes, as shown below.
Now, we can test our application in the development environment before deploying it.
Once it’s deployed, we can run the application without seeing the development environment.
Notice that an Appsmith workspace contains all of your applications. (Mine are shown here.)
Here’s the page showing all 20 Appsmith templates available to use and customize.
As you’ve seen, Appsmith is a competent drag-and-drop low-code application platform. It includes a free, open source option as long as you don’t need priority support, SAML, SSO, or more than three private Git repositories. For any of those features, or for custom access controls, audit logs, backup and restore, or custom branding, you’d need the paid Appsmith Business plan.
If you think Appsmith might meet your needs for internal departmental application development, I’d encourage you to try out the free, open source version. Trying it in the cloud is less work than self-hosting, although you may eventually want to self-host if you adopt the product.
Posted by Richy George on 9 November, 2022This post was originally published on this site
Happy Hacking Keyboard Hybrid Type-S is aimed at those with highly specific needs from a keyboard: a compact keyboard layout; quiet but comfortable typing; and the need to switch between multiple Bluetooth-connected devices on the fly. Its price tag will raise eyebrows ($385 list), but it offers a package of features that are otherwise hard to find in a single keyboard.
The HHKB (as it’s abbreviated) uses a key layout even more compact than most laptops. The whole unit is compact enough to throw into a knapsack. Function keys, arrows, and many other controls are accessed by way of a special “Fn” key. Delete is directly above the Return key. There’s also no dedicated Caps Lock key; that’s accessed by pressing Fn+Tab.
Once I got used to the HHKB layout, though, typing on it was quite nice. (I wrote this review with it.) A big part of the HHKB’s cost is its Topre electrostatic capacitive switch mechanisms, which generate a pleasant amount of tactile feedback while also reducing typing clatter. The overall noise level is on a par with a soft-touch notebook keyboard. Unfortunately, there’s no key back lighting.
DIP switches and Fn key combinations let you choose between Mac or Windows key sets. For instance, when Windows is the selected key set, the Mac Option key is repurposed to become the Windows menu key. Unfortunately, the few multimedia key bindings included by default—volume controls, mute, and eject—are Mac-only.
One really powerful HHKB feature is its multi-device support. You can pair the keyboard via Bluetooth to up to four different devices—desktop PCs, phones, anything that pairs keyboards via Bluetooth—and switch between them with a Fn-Control-number key combo. It’s an appealing option for those who struggle with KVM switches or who want to use the same keyboard at work and at home. You can also connect the HHKB directly to a system via USB-C, although USB-C cabling isn’t included.
Another powerful feature is the HHKB’s key mapping utility. You can create custom key layouts if you don’t like the existing one. For instance, I remapped one of the Alt keys to behave like a dedicated Caps Lock key, and mapped the Fn+WASD keys to work as arrows, as the default arrow key bindings are not very comfortable for my hands. Key sets can be saved to files, or replaced at any time with the factory setting.
The Happy Hacking Keyboard Hybrid Type-S is wonderfully compact, comfortable, and quiet. I love its key mapping and Bluetooth switching capabilities. But I find its $385 price tag really hard to swallow.
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