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让我们通过Akka框架学习什么是指数退避（Exponential Backoff），它在高负荷环境下如何担任重要的角色。它的基本参数，如何测试，应用场景，软件监控等等。

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This article studies the real estate market of Île-de-France in 2020 by exploring and visualizing the dataset DVF using Kibana. We will discuss the global landscape, the impact of COVID-19, the situation in different departments, and more.

How to write and execute metric and bucket aggregations in Elasticsearch for dataset: Demandes de valeurs foncières (DVF) for data analytics. Also, how to execute aggregations that contain sub-aggregations.

This article explains how to generate the configuration for Elasticsearch using Python templating engine Jinja 2 by going through a basic use-case. It also explains features about Jinja2, testing, and more.

Understanding different disk watermarks: low, high, and flood-stage in Elasticsearch. The symptom when the cluster reaches these values and how to mitigate or avoid the issues. Also, how to better operate your clusters using these watermarks.

How to write dynamic tests using @TestFactory in JUnit 5? This article explains the syntax, different return types, the test lifecycle, and potential use-cases.

How to add or remove a field from a Mongo collection without breaking the production?