Zato Blog

Open Source ESB, APIs, AI
and Cloud Integrations in Python

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Resilient REST APIs with SSL/TLS client certificates

Dariusz Suchojad
May 10, 2021
This Zato how-to is about ensuring that only API clients with valid SSL/TLS certificates, including expected certificate fingerprints or other metadata, can invoke selected REST endpoints. In this way, we are making access to the endpoints secure and, at the same time, we can guard against a class of faults related to the Certificate Authority infrastructure.

Topics: REST, Security, SSL-TLS

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Converting SOAP and WSDL into REST APIs

Dariusz Suchojad
May 3, 2021
Even if most of new APIs today are built around REST, there are still already existing, production applications and systems that expose their APIs using SOAP and WSDL only - in today’s article we are integrating with a SOAP service in order to expose it as a REST interface to external applications.

Topics: SOAP, WSDL, REST

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Checking your Zato version details

Dariusz Suchojad
April 26, 2021
The seemingly simple zato --version command packs in several interesting details that are helpful in understanding what Zato version one currently uses - let’s find out what they all mean.

Topics: CLI

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Understanding WebSocket API timeouts

Dariusz Suchojad
April 12, 2021
Zato WebSocket channels let you accept long-running API connections and, as such, they have a few settings to fine tune their usage of timeouts. Let’s discover what they are and how to use them.

Topics: WebSockets

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API publish/subscribe between Zato services

Dariusz Suchojad
March 28, 2021
One of the additions in the upcoming Zato 3.2 release of is an extension to its publish/subscribe mechanism that lets services publish messages directly to other services. Let’s check how to use it and how it compares to other means of invoking one’s API services. How does it work? In your Zato service, you can publish a message to any other services as below. Simply point self.pubsub.publish to the target service by the latter’s name and it will receive your message.

Topics: Publish Subscribe

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Setting advanced options of SQL connection pools

Dariusz Suchojad
February 22, 2021
In this article, we will cover the details of how Zato SQL connection pools can be configured to take advantage of features and options specific to a particular driver or to the SQLAlchemy library.

Topics: SQL

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Configuring API details via environment variables

Dariusz Suchojad
February 15, 2021
Today, we are looking at how environment variables can be used to let the configuration of your Zato-based API services be reusable across environments - this will help you centralise all of your configuration artefacts without a need for changes when code is promoted across environments of different levels.

Topics: Configuration, Docker, CLI

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Integrating with IBM MQ in Python

Dariusz Suchojad
February 8, 2021
Using Zato, it is easy to make IBM MQ queues available to Python applications - this article will lead you step-by-step through the process of setting up the Python integration platform to listen for MQ messages and to send them to MQ queue managers.

Topics: IBM MQ

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New REST programming examples

Dariusz Suchojad
January 15, 2021
As we are preparing to release Zato 3.2 soon, all the programming examples are being rewritten to showcase what the platform is capable of. That includes REST examples too and this article presents a few samples taken from the documentation.

Topics: REST