Writing Your Own Service Discovery Client: APISIX

In general, API Gateways – and in particular, Apache APISIX – provide a single entry point into one’s information system. This architecture allows for managing load balancing and failover over similar nodes. For example, here’s how you can create a route balanced over two nodes in Apache APISIX: curl http://localhost:9080/apisix/admin/routes/1 -H ‘X-API-KEY: edd1c9f034335f136f87ad84b625c8f1’ -X PUT … Read more

unit testing – Trouble Writing to Jest Mocked Prisma Database

I have two databases that I need to interact with in my code. I have a simple function that takes an object and writes it to my PostgreSQL database using Prisma. I’ve tested the function with Postman, and it works perfectly, but when I try to execute it using a Jest mock (using the singleton … Read more

Reading and Writing With a ConcurrentHashMap

ConcurrentHashMap provides a Map implementation with thread-safe read and write operations. The Map and ConcurrentMap interfaces provide methods that ConcurrentHashMap takes advantage of to provide thread-safe interactions. Generally, I tend to really on the Map interface as it provides most of the same methods that ConcurrentMap has; However, depending on your use case, it might … Read more

Hands-On Hardhat — Writing Contracts, Testing, and Deploying | by Azat | Jul, 2022

Part-2 Image from Unsplash In the previous part, we mentioned how to set up our project environment with Hardhat. In this part, we will detail our project structure and write our first contract with its tests and finally, we will deploy it. Okay, folks let’s open our VSCode. When you look at our project’s structure … Read more

5 tips for writing better API documentation

When software moved online, so did the documentation. Today, hosted documentation is the norm. But while the formats and delivery methods for documentation have changed, the fundamental goal of explaining software has not. If anything, writing good documentation has become more difficult in recent years. The complexity of the information needed to support software products … Read more

azure – Py4JJavaError: An error occurred while calling o3858.save. : org.apache.spark.SparkException: Writing job aborted

I m trying to write data into cosmos db using the dataframe df_u. i have defined the configuration in writeMcgMd. im using spark version 3.2.1 Code – df_u.write.format(“cosmos.oltp”).options(**writeMcgMd).mode(“append”).save() Used – writeMcgMd = { “spark.cosmos.accountEndpoint” : “https://cccc.azure.com:443/”, “spark.cosmos.accountKey” : “ccc”, “spark.cosmos.database” : “cccc”, “spark.cosmos.container” : “ccc”, # “spark.cosmos.write.strategy”: “ItemOverwrite” } Error from driver logs from databriks … Read more

Spring Boot and Swagger — Writing Good API Documentations | by Farzin Pashaee | Jun, 2022

Documentations made easy APIs are one of the key players in the technology world whether they are used in a simple mobile application in integrating complex enterprise systems. Any application can become a platform by enabling methods to enhance and add services to existing products using APIs. Having good documentation for these APIs is critical … Read more

functional programming – Problem with given instances writing MTL style code with Scala cats

Problems with inference seem to be one of the reasons why the particular MTL implementation that you linked is relying on traits such as MonadPartialOrder instead of MonadTransformer-typeclasses. Basically, what happens here is this: When you want to get from F to G The MonadPartialOrder-approach asks for a bridge from F to G Your approach … Read more