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Gergely Sinka
"Not all code paths return a value." - VS
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Instantly Push Feature Flag Changes to Clients

· 2 min read
Gergely Sinka
"Not all code paths return a value." - VS

There is a way to stream feature flag and configuration changes to the clients right when they happen. In some cases ConfigCat's pull based architecture does not completely satisfies the requirements when microservices need the latest values instantly, or mobile apps where polling sometimes is a battery consuming anti-pattern.

TL;DR

Your application subscribes to a PubNub channel to get updates about changes. And use ConfigCat Webhooks to notify PubNub when a feature flag value gets updated.

Sample application in Node.js.

push-noti

User Targeting with Semantic Versioning Now Available

· One min read
Gergely Sinka
"Not all code paths return a value." - VS

Satisfying the feature request of our customers from the mobile app development industry, ConfigCat now supports semantic version (SemVer) based user targeting. Typical use case where app builders wish to enable or disable features based on the iOS or Android version on the device their app is running on. For example deciding if 2.3.40 is less than or equals 2.30.4 sometimes not that straightforward by only using the traditional < > = comparators.

semver-menu

Two-Factor Authentication (2FA) in ConfigCat

· One min read
Gergely Sinka
"Not all code paths return a value." - VS

What is 2FA?

2FA is a way of granting access to users only after presenting two separate pieces of evidence (factors). One of these factors is usually a password which the user should know and the other factor something they have or even something they are. This way you can be sure that only knowing your password won't be enough for an attacker to gain access to your account.

How does 2FA work in ConfigCat?

In our case the first factor is password you use to login to ConfigCat Dashboard. The second factor is a 6-digit number generated via an Authenticator App.