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Wallet Connect: Open Protocol for Connecting Wallets to Dapps
WalletConnect v1.x.x
Open protocol for connecting Wallets to Dapps - https://walletconnect.org
Packages
| SDK | Current Version | Description |
|---|---|---|
| walletconnect |  | SDK |
| Clients | Current Version | Description |
|---|---|---|
| @walletconnect/core |  | Core Client |
| @walletconnect/client |  | Isomorphic Client |
| Providers | Current Version | Description |
|---|---|---|
| @walletconnect/ethereum-provider |  | Ethereum Provider |
| @walletconnect/truffle-provider |  | Truffle Provider |
| @walletconnect/web3-provider |  | Web3 Provider |
| @walletconnect/web3-subprovider |  | Web3 Subprovider |
| Helpers | Current Version | Description |
|---|---|---|
| @walletconnect/browser-utils |  | Browser Utilities |
| @walletconnect/http-connection |  | HTTP Connection |
| @walletconnect/iso-crypto |  | Isomorphic Crypto |
| @walletconnect/qrcode-modal |  | QR Code Modal |
| @walletconnect/react-native-dapp |  | React-Native Dapp |
| @walletconnect/signer-connection |  | Signer Connection |
| @walletconnect/socket-transport |  | Socket Transport |
| @walletconnect/types |  | Typescript Types |
| @walletconnect/utils |  | Utility Library |
## Quick Start
Find quick start examples for your platform at https://docs.walletconnect.org/quick-start
Documentation
Read more about WalletConnect protocol and how to use our Clients at https://docs.walletconnect.org
Download Details:
Author: algorand
Source Code: https://github.com/algorand/walletconnect-monorepo
License: Apache-2.0 License
#algorand #blockchain #cryptocurrency #typescript #javascript
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1597222800
PostgreSQL Connection Pooling: Part 4 – PgBouncer vs. Pgpool-II
In our previous posts in this series, we spoke at length about using PgBouncer and Pgpool-II , the connection pool architecture and pros and cons of leveraging one for your PostgreSQL deployment. In our final post, we will put them head-to-head in a detailed feature comparison and compare the results of PgBouncer vs. Pgpool-II performance for your PostgreSQL hosting !
The bottom line – Pgpool-II is a great tool if you need load-balancing and high availability. Connection pooling is almost a bonus you get alongside. PgBouncer does only one thing, but does it really well. If the objective is to limit the number of connections and reduce resource consumption, PgBouncer wins hands down.
It is also perfectly fine to use both PgBouncer and Pgpool-II in a chain – you can have a PgBouncer to provide connection pooling, which talks to a Pgpool-II instance that provides high availability and load balancing. This gives you the best of both worlds!
PostgreSQL Connection Pooling: Part 4 – PgBouncer vs. Pgpool-II
Performance Testing
While PgBouncer may seem to be the better option in theory, theory can often be misleading. So, we pitted the two connection poolers head-to-head, using the standard pgbench tool, to see which one provides better transactions per second throughput through a benchmark test. For good measure, we ran the same tests without a connection pooler too.
Testing Conditions
All of the PostgreSQL benchmark tests were run under the following conditions:
- Initialized pgbench using a scale factor of 100.
- Disabled auto-vacuuming on the PostgreSQL instance to prevent interference.
- No other workload was working at the time.
- Used the default pgbench script to run the tests.
- Used default settings for both PgBouncer and Pgpool-II, except max_children*. All PostgreSQL limits were also set to their defaults.
- All tests ran as a single thread, on a single-CPU, 2-core machine, for a duration of 5 minutes.
- Forced pgbench to create a new connection for each transaction using the -C option. This emulates modern web application workloads and is the whole reason to use a pooler!
We ran each iteration for 5 minutes to ensure any noise averaged out. Here is how the middleware was installed:
- For PgBouncer, we installed it on the same box as the PostgreSQL server(s). This is the configuration we use in our managed PostgreSQL clusters. Since PgBouncer is a very light-weight process, installing it on the box has no impact on overall performance.
- For Pgpool-II, we tested both when the Pgpool-II instance was installed on the same machine as PostgreSQL (on box column), and when it was installed on a different machine (off box column). As expected, the performance is much better when Pgpool-II is off the box as it doesn’t have to compete with the PostgreSQL server for resources.
Throughput Benchmark
Here are the transactions per second (TPS) results for each scenario across a range of number of clients:
#database #developer #performance #postgresql #connection control #connection pooler #connection pooler performance #connection queue #high availability #load balancing #number of connections #performance testing #pgbench #pgbouncer #pgbouncer and pgpool-ii #pgbouncer vs pgpool #pgpool-ii #pooling modes #postgresql connection pooling #postgresql limits #resource consumption #throughput benchmark #transactions per second #without pooling
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Mobile Wallet Development, eWallet App Development, Digital Wallet App Development
In this century and particularly in this year, we all have become most dependent on electronics than we could have ever imagined. From our first blink in the morning, till our eyes droop at night, there is no way we spend a minute apart from smartphones and electronic devices as well. The Internet is another component that is not to be missed. Starting from on-demand food delivery to e-wallets apps, everything is allowing people to gain the benefits effortlessly, which were then a mere dream.
For instance, none would have imagined that there would be an app to take care of all the financial transactions without having to carry currencies and documents everywhere from paying bills, recharging mobile phones, peer-to-peer payment, and mobile to bank transactions or vice versa.
The types of solutions that come under the e-wallet app:
NFC: NFC or Near Field Communication is the best technology, as it just involves tapping phones with other devices so that people can make hassle-free payments
QR Codes: It is used in case the users don’t have the number of the other person they want to transfer their money to. They have to scan and type in the amount, and the payment is made.
Blockchain: As an evolving solution, this offers its users numerous secure and immutable features. It is mainly used by giant organizations for transferring massive amounts.
Bluetooth and iBeacon: As one of the effective technologies introduced by Apple, it is making revolutionary changes in the economy.
Briefly,
The digital wallet development has to be efficient to ensure that the end product or the e-wallet app must be secure. So, please get to our experienced digital wallet development company like Appdupe now!
#mobile wallet development #mobile wallet app development #e wallet app development #e wallet development #digital wallet development #digital wallet app development
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Mobile Wallet Development, eWallet App Development, Digital Wallet App Development
Enjoy the perks of developing a fast, secure, and robust mobile wallet app by launching e-wallet apps like Venmo, Paytm, Amazon Pay, etc., with just a single mobile wallet solution. The solution is 100% customizable, and you can modify the elements to your liking, such as logo, brand names, themes, etc. So get the solution by contacting a reliable and experienced mobile wallet app developer like Appdupe. Grab the solution and hit the jackpot!
#mobile wallet development #mobile wallet app development #e wallet app development #e wallet development #digital wallet development #digital wallet app development
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Mobile Wallet Development, eWallet App Development, Digital Wallet App Development
With new technology and innovations born every day, we, at Appdupe, as the leading digital wallet app development company, are transforming and updating our services. So if you are an entrepreneur who wants to digitize your finance business, then here’s your best shot to join hands with us for developing a blue-chip e-wallet app.
#mobile wallet development #mobile wallet app development #e wallet app development #e wallet development #digital wallet app development #mobile wallet app developer
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Mobile Wallet Development, eWallet App Development, Digital Wallet App Development
Digital wallet apps are becoming the talk of the town, because of the extreme ease of transferring, and paying funds they are providing. If you are an aspiring entrepreneur, looking for an idea, then digital wallet app development is your call. All you have to do is start your journey to the Appdupe team and rest is assured. Don’t wait further!Mobile wallet development
#mobile wallet development #mobile wallet app development #e wallet app development #e wallet development #digital wallet app development #mobile wallet app developer