UDOH JOHN

A network Engineer that is into professional installation of network and security device.
DM me for your CCTV, WLAN, Access Control, LAN Connectivity

[UDOH JOHN @udohj1]

@tokunbo_wahab @ruffydfire If you don't have solution to waste management in lagos state, @tokunbo_wahab should resign so more competent hands can come.

If they start saying lagos is smelling you will start shouting.

We are still waiting on LAWMA to come evacuate the one in my compound its over 1 month.

[UDOH JOHN @udohj1]

@AirtelNigeria @MUDIAGAABENZ @AirtelNigeria
Return the money i paid for ODU since dec 2025 that was not delivered despite acknowledging the transaction was successful

[UDOH JOHN @udohj1]

@DanielRegha Instead of hoping on dangote, FGN should ensure all 3 refineries are working optimally then we won't be discussing dangote.

[UDOH JOHN @udohj1]

@airtelnigeria I paid for this device last year Dec on your site and am yet to get the device or a refund.

[MissG🦋 @MissGijae]

So apparently if you purchased this Airtel Odu and Idu device, just know that the device doesn’t belong to you but rather it’s still the PROPERTY OF AIRTEL. I got a call earlier today, that they want to come retrieve it because I haven’t used it since February this year

[UDOH JOHN @udohj1]

@MissGijae I paid for one dec last year, am yet to get the device or a refund.

[UDOH JOHN @udohj1]

@TheoAbuAgada The cement senerio is gradually playing out. NNPC that is suppose to force the change is also selling at a high rate.

[UDOH JOHN @udohj1]

@BashirAhmaad The freeTV subscription is billed annually, so don't let anyone gaslight you.

[UDOH JOHN @udohj1]

@MTNNG @MTNNG your CEO told everyone there was nothing like unlimited data.
pls which one are you advertising to us or are saying Mr CEO doesn't know what he was saying or this promotion is simply dishonest.

[Akintola Steve @Akintola_steve]

Most engineers who struggle with system design interviews aren’t bad engineers.

They just started learning the wrong things, in the wrong order.

Here’s the actual roadmap, what to learn first, what comes next, and what to save for later.

[Akintola Steve @Akintola_steve]

How Docker Actually Works Under the Hood

Everyone says:

"Docker is just a lightweight VM."

That's wrong.

And if you believe it, you don't actually understand what's running in your production environment.

Here's how Docker actually works under the hood.

[UDOH JOHN @udohj1]

@dammiedammie35 VDM is saying seyi tinubu is more important than those poor men children because he is the president's son.
I pity those poor men who are always supporting him, he doesn't regard any of you.
This is where i lose my respect for VDM

[Akintola Steve @Akintola_steve]

While working with caches, always implement cache stampede protection.

The moment a hot cache key expires, you don’t want 10,000 users hitting your database at the same time.

Let a single request rebuild the cache through a distributed lock while every other request waits briefly or gets stale data.

Add TTL jitter too, so your hot keys don’t all expire at once.

[UDOH JOHN @udohj1]

@onu_slim This is a result of weak government regulations and corruption in the system.

[UDOH JOHN @udohj1]

@yabaleftonline Democracy and Separation of power indeed.
Neither Desmond Eliot nor the new kid deserve to represent that constituency, electorate must shine their eyes.

[UDOH JOHN @udohj1]

@OPay_NG Hi @OPay_NG, i sent a DM for charge-back on an airtel 5G router i paid for but was not delivered which paystack said i should do through my bank.

This was over 2 months ago, unfortunately no response from opay even after sending multiple reminders for update.

This is not fair.

[Akintola Steve @Akintola_steve]

So one thing I’ll say briefly:

If your app revolves around:

• Payments
• Wallets
• Transfers
• Savings
• Investments
• Lending
• POS/Agency banking
• Crypto
• Payroll
• Cross border transactions

Then CBN compliance is your problem because you’re dealing with money movement and financial activities.

If you collect user data:
NDPC enters the chat.

If customers use your platform:
FCCPC enters the chat.

If businesses onboard on your platform:
CAC requirements enter the chat.

If users can transact:
KYC, AML, audit trails and proper transaction monitoring should already be part of your architecture from day one.

Most people are building products.
Government agencies are waiting to build cases 😂

[Akintola Steve @Akintola_steve]

When you’re dealing with fintech solutions as a backend engineer, these 5 concepts are not optional.

Ignore them and you’re literally risking financial fraud, regulatory issues or even jail time.

1. Idempotency
A payment retry must never debit a customer twice. Ever.

2. Audit Logs / Event Tracking
Every action must leave a trace.
Who did what, when, from where and how.

3. Transaction Integrity
Partial success is dangerous in fintech.
Money movement must remain consistent even during failures.

4. Proper Authentication & Session Security
Weak auth in fintech is basically inviting attackers into your vault.

5. Reconciliation
Your ledger, bank records, payment gateway records and wallet balances must always reconcile correctly.

One mismatch can become millions missing.

Fintech backend engineering is beyond “API works”.

You’re handling real money, regulations, trust and people’s livelihoods.

[Man of Letters. @Letter_to_Jack]

Make this go viral instead, as it reflects the accurate numbers that they are trying to hide. Nigeria didn’t begin in 1999.

Playing regional victim after ruling a country for 47 years out of the 66 years of her entire existence is diabolical.

[UDOH JOHN @udohj1]

@HOJ_Onuakalusi Good! Great!! But how many non-Igbo or Yoruba are there on the list.
where is the spirit of equity and fairness; when its time for election you call on everyone but for giveaway only your people matters.

[Akintola Steve @Akintola_steve]

Building an auth system?
You need to be extra careful cos that thing is literally the front door to your entire application.
So implement the following

1. Rate limit your auth endpoints properly.
If you don’t, people will comfortably sit somewhere and spam login/register/reset password requests all day.
Doing that helps reduce brute force attempts, abuse and unnecessary load on your infrastructure.

Implement throttling too.
Especially on failed login attempts.
That one helps slow attackers down heavily instead of allowing unlimited guessing attempts per second.