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Development

XAMARIN – Firebase Cloud Messaging – Android Device not display notification but he receives it

Hi I’m trying to send notifications to an Android device. I am using this plugin CrossGeeks/PushNotificationPlugin. I created the firebase project and extracted the parameters for use on webapi that I made with .NET Core MVC 3.1. When I send the notification, the breakpoint on the event is triggered correctly CrossPushNotification.Current.OnNotificationReceived + = (s, p) […]

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Development System & Network

Biggest Outsourcing Pros and Cons for IT Services

Ever since businesses have been around, outsourcing also has been around. After all, if you just need a specific, time-sensitive project completed, why would you go to the trouble of hiring an additional employee when you can just outsource the project and have it done for even lesser cost and headache? There’s no doubt that […]

Categories
Development System & Network

Biggest Outsourcing Pros and Cons for IT Services

Ever since businesses have been around, outsourcing also has been around. After all, if you just need a specific, time-sensitive project completed, why would you go to the trouble of hiring an additional employee when you can just outsource the project and have it done for even lesser cost and headache? There’s no doubt that […]

Categories
Development System & Network

What is parallel virtualization?

What is parallel virtualization and how does it different from I’m trying to understand what types of virtualization exists and to assist this task, I found a book by Dijiang Huang and Huijun Wu, Mobile Cloud Computing. The passages posted below are also available on Google Books: https://books.google.com/books?id=dupGDgAAQBAJ. From section 2.2.3, table 2.2, page 42: […]

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Development

I need to understand how to connect a API-Gateway with Authentication-Microservice and other Microservies

758/5000 Hi folks, I have a few questions about which I have not found exact answers on the Internet. You should know that I am a bloody beginner when it comes to microservices. I created several micro services that I connected to each other. On the one hand the Zuul-Api-Gateway, a separate microservice for login […]

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Development Linux

Can I perform incremental backups with Syncthing?

I have found a page which describes how to go about doing incremental backups using rysnc. To me incremental backups are good not only because they save space and time but also because you can potentially manage a snapshot system, like Timeshift, where for any one of several reasons, including synched deletion of files that […]

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Bitcoin Cryptocurrency Development

Does a trusted blockchain import from BitcoinCore require that chainstate and blocks be from the same source?

Can the chainstate folder from a pruned node be used with the blocks folder from a full node to provide the full blockchain? Assume that both nodes have been running for months. If the blocks folder contains references to filenames in the chainstate folder, then the answer is no. I know this because the filenames […]

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Bitcoin Cryptocurrency Development

Does a trusted blockchain import from BitcoinCore require that chainstate and blocks be from the same source?

Can the chainstate folder from a pruned node be used with the blocks folder from a full node to provide the full blockchain? Assume that both nodes have been running for months. If the blocks folder contains references to filenames in the chainstate folder, then the answer is no. I know this because the filenames […]

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Development Linux

Security issues for passing credentials over a UNIX socket

UNIX sockets often have a mechanism to authenticate their peer processes. However, there is a requirement for care in order to avoid confused deputy attacks. Linux, for example, has two ways to pass credentials over a UNIX socket: SO_PASSCRED and SO_PEERCRED. SO_PEERCRED is only supported for stream sockets or socketpair(2), and the user identity is […]

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Development

Postgres: How to efficiently bucketize random event ids below (hour,config_id,sensor_id)

I have a large table “measurement” with 4 columns: measurement-service=> \d measurement Table “public.measurement” Column | Type | Collation | Nullable | Default ———————–+—————————–+———–+———-+——— hour | timestamp without time zone | | not null | config_id | bigint | | not null | sensor_id | bigint | | not null | event_id | uuid | […]